Online Collections - USDA Hardiness Zone
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Abelia biflora Turcz. LINNAEACEAE - TWINFLOWER FAMILY
	USDA 7. TWINFLOWER ABELIA

	351-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Chang Yu Gou (Long Valley), Song Shan Forest Preserve, Yanqing County, Beijing Shi Municipality, China (Zhonghua). Habitat: east-northeast facing slope in the base of a valley.
	384-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Mu Chang (Big Trunk Field), Baihua Shan Forest Preserve, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: seasonally moist soils, full sun, among boulders.

Abelia chinensis R.Br. LINNAEACEAE - TWINFLOWER FAMILY
	USDA 7. CHINESE ABELIA

	411-74	Seed from Botanical Garden of the Uzbek Academy of Sciences. Garden collected.
	460-79	Cutting from The Morton Arboretum. Garden collected.
	287-88	Cutting from The Morton Arboretum. Garden collected.

Abies x bornmuelleriana Mattf. PINACEAE - PINE FAMILY
	USDA 6. BORNMUELLER'S FIR, BORNMUELLER FIR

	424-76	Plant from Claude E. Heit. Garden collected.

Abies cephalonica Loudon PINACEAE - PINE FAMILY
	USDA 6. GREEK FIR

	510-62	Seed from Arboretum Mlynany, Institute of Dendrobiology, Center of Biologic-Ecological Sciences, Slovak Acad. of Sciences. Wild collected Banska Stiavnica, Czechoslovakia.

Abies chensiensis Tiegh. PINACEAE - PINE FAMILY
	USDA 6. SHENSI FIR

	285-81	Seed from Chinese Academy of Forestry, Research Institute of Forestry. Wild collected, China (Zhonghua). Habitat: subalpine region of SW China.

Abies holophylla Maxim. PINACEAE - PINE FAMILY
	USDA 6. NEEDLE FIR

	553-39	Plant from U.S.D.A. Wild collected by Dorsett & Morse, U.S.D.A. in "Ryining Province", Manchow Region, China (Zhonghua).
	240-41	Plant from Fairview Evergreen Nurseries, Inc. Garden collected.
	628-50	Seed from Northeastern Forest Experiment Station. Garden collected at King's Tomb, Kwang Nun, Republic of Korea.
	888-61	Plant from unknown. Garden collected.
	22-71	Plant from United States National Arboretum. Garden collected.
	295-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected near Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: upland woodland on cool moist north slope.

Abies koreana 'Blaue Zwo' PINACEAE - PINE FAMILY
	USDA 6. BLAUE ZWO KOREAN FIR

	60-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Abies koreana 'Silberlocke' PINACEAE - PINE FAMILY
	USDA 5. SILVER TRESSES KOREAN FIR, SILBERLOCKE KOREAN FIR

	65-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Abies nordmanniana ssp. equi-trojani (Asch. & Sint.) Coode & Cullen PINACEAE - PINE FAMILY
	USDA 6. TROJAN FIR

	553-96	Seed from Beltsville National Germplasm Research Laboratory. Wild collected by Forest Trees and Seeds Breeding Research Directorate at Bolu-Kokez, Bolu Province, Black Sea Region, Turkey.
	82-2009	Plant from Morris Arboretum of the University of Pennsylvania. From plant of known wild origin collected by Forest Trees and Seeds Breeding Research Directorate Kaz Dagi (Mt. Ida), Edremit District, Baliksir Province, Turkey. Habitat: mountain.
	83-2009	Plant from Morris Arboretum of the University of Pennsylvania. From plant of known wild origin collected by Forest Trees and Seeds Breeding Research Directorate Kaz Dagi (Mt. Ida), Edremit District, Baliksir Province, Turkey. Habitat: mountain.
	84-2009	Plant from Morris Arboretum of the University of Pennsylvania. From plant of known wild origin collected by Forest Trees and Seeds Breeding Research Directorate Kaz Dagi (Mt. Ida), Edremit District, Baliksir Province, Turkey. Habitat: mountain.

Abies sachalinensis (F.Schmidt) Mast. PINACEAE - PINE FAMILY
	USDA 3. SAKHALIN FIR

	428-76	Plant from Claude E. Heit. Garden collected.

Abies sibirica Ledeb. PINACEAE - PINE FAMILY
	USDA 2. SIBERIAN FIR

	419-79	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected along the Bija River near Artybash, Siberia in the Altai Mountains, Russian S.F.S.R., U.S.S.R. Habitat: mountains.
	195-93	Seed from 1993 Expedition to Russia (Gorno-Altai) Chicago BG, Holden Arb, Minn. Landsc. Arb, Mo. BG, & Morton Arb. Wild collected by Peter J. van der Linden, The Morton Arboretum near the Kucherla River southwest of Tujngur village, Gorno-Altayskaya Autonomous Region, Russia. Habitat: at e-facing slope base at birch-conifer forest edge.

Acer argutum Maxim. ACERACEAE - MAPLE FAMILY
	USDA 6. DEEP-VEINED MAPLE, POINTED-LEAF MAPLE, SHARP-TOOTHED MAPLE

	227-90	Cutting from The Morton Arboretum. Garden collected.

Acer campestre var. austriacum (Tratt.) DC. ACERACEAE - MAPLE FAMILY
	USDA 6. AUSTRIAN HEDGE MAPLE, AUSTRIAN FIELD MAPLE

	531-38	Seed from Arboretum of the S. M. Kirov Forest Academy. Garden collected.

Acer cappadocicum Gled. ACERACEAE - MAPLE FAMILY
	USDA 6. COLISEUM MAPLE

	1565-35	Seed from County of Monroe Department of Parks. Garden collected.
	286-54	Seed from Barres Botanical Garden. Garden collected.
	660-2006	Plant from Morris Arboretum of the University of Pennsylvania. Garden collected.

Acer caudatum ssp. multiserratum (Maxim.) A.E.Murray ACERACEAE - MAPLE FAMILY
	USDA 5. SAW-TOOTHED MAPLE, SAWTOOTH MAPLE

	894-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected at Mei Lu Gou, Die Bu County, Gansu Province, China (Zhonghua). Habitat: mesic mixed decid./conif. forest, havily logged, cool e-running ravine, 75 deg n-slope, organic rocky soil.

Acer forrestii Diels ACERACEAE - MAPLE FAMILY
	USDA 6. FORREST'S MAPLE, FORREST MAPLE

	434-76	Plant from George Sawicki. Garden collected.
	122-93	Cutting from The Morton Arboretum. Garden collected.

Acer x freemanii 'Autumn Blaze' Patent 4864 ACERACEAE - MAPLE FAMILY
	USDA 3. AUTUMN BLAZE FREEMAN'S MAPLE

	69-94	Plant from Western DuPage Landscaping. Garden collected.
	247-94	Plant from Klehm Nursery. Garden collected.
	748-2004	Plant from Northern Illinois Wholesale Nursery. Garden collected.
	877-2004	Plant from Klehm Nursery. Garden collected.
	1305-2004	Plant from Mariani Nursery. Garden collected.

Acer x freemanii 'Marmo' ACERACEAE - MAPLE FAMILY
	USDA 4. MARMO FREEMAN'S MAPLE

	143-94	Plant from Hinsdale Nurseries Inc. Garden collected.
	256-95	Plant from Klehm Nursery. Garden collected.
	58-2003	Plant from Bailey Nurseries, Inc. Garden collected.
	1248-2004	Plant from Mariani Nursery. Garden collected.
	1298-2004	Plant from Kaneville Tree Farms, Inc. Garden collected.
	606-2005	Plant from Mariani Nursery. Garden collected.

Acer ginnala Maxim. ACERACEAE - MAPLE FAMILY
	USDA 2. AMUR MAPLE

	226-62	Plant from Jewell Nurseries Inc. Garden collected.
	494-83	Cutting from The Morton Arboretum. Garden collected.
	272-90	Seed from Staff, The Morton Arboretum. Wild collected in the Feng lin Preserve in the Wu ying division of the town of Yichun, Heilongjiang Sheng Province, China (Zhonghua). Habitat: seral woods along Tang Wang River.
	70-94	Plant from Western DuPage Landscaping. Garden collected.
	3-U	Unknown from unknown. Unknown collected.

Acer heldreichii Orph. ex Boiss. ACERACEAE - MAPLE FAMILY
	USDA 6. BALKAN MAPLE

	537-59	Graft from Arnold Arboretum of Harvard University. Garden collected.

Acer japonicum 'Aconitifolium' ACERACEAE - MAPLE FAMILY
	USDA 6A. FERN-LEAVED FULLMOON MAPLE, FERN-LEAVED FULL-MOON MAPLE

	200-2000	Plant from Buchholz & Buchholz Nursery. Garden collected.
	183-2006	Plant from Beaver Creek Nursery, Inc. Garden collected.

Acer 'Keithsform' Patent 7529 ACERACEAE - MAPLE FAMILY
	USDA 4B. NORWEGIAN SUNSETÒ

	95-91	Plant from J. Frank Schmidt & Son Co. Garden collected.

Acer leucoderme Sm. ACERACEAE - MAPLE FAMILY
	USDA 6. CHALK MAPLE

	280-39	Seed from New York Botanical Garden. Garden collected.
	324-82	Cutting from The Morton Arboretum. From plant of known wild origin collected by Fred Galle near Pine Mountain (Chipley), Georgia.

Acer mono Maxim. ACERACEAE - MAPLE FAMILY
	USDA 6. PAINTED MAPLE

	2131-28	Seed from Otto Katzenstein & Co. Garden collected.
	629-39	Seed from Garden of Manchurian Flora. Garden collected.
	314-52	Seed from County of Monroe Department of Parks. Garden collected.
	837-58	Plant from County of Monroe Department of Parks. Garden collected.
	414-83	Seed from Botanical Garden of the Latvian State University. Wild collected near Kamanushka in the Ussuri Region, Russian S.F.S.R., U.S.S.R. Habitat: sylva frondosa.
	73-84	Plant from United States National Arboretum. Wild collected Tomakomai Exp. Forest, Momakomai-shi, Hokkaido Prefecture, Hokkaido Region, Japan.
	146-85	Seed from Research Institute of Ecology and Botany Hungarian Academy of Sciences Botanical Garden. Wild collected Kumgang Mtns., Kangwon Do Province, N. Korea. Habitat: mixed broadleaf and pinewood, rocky forest.
	306-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: in moist valleys only; woodland understory.
	359-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Zhaung Ke (Old Village), Song Shan Forest Preserve, Yanqing County, Beijing Shi Municipality, China (Zhonghua). Habitat: full sun above boulder field in stream-deposited soils.
	401-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Nang Gou (Big South Valley), Xiao Long Meng Forest Preserve, Dongling Shan, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: in boulders on a steep slope above water in organic soils.
	1-96	Seed from Jin, Heilongjiang Academy of Forestry. Wild collected at Camp 5 near Ich'un, Heilongjiang Sheng Province, China (Zhonghua). Habitat: natural red pine broadleaf forest.

Acer oliverianum Pax ACERACEAE - MAPLE FAMILY
	USDA 6. OLIVER'S MAPLE

	166-75	Seed from Hillier & Sons Nursery. Garden collected.
	323-2000	Plant from The Morton Arboretum Research Program. Wild collected by at Miaotaizi Forest Station, Guang Hua Shan, Nanzheng Forest Bureau, Hanzhong District, Shaanxi Province, China (Zhonghua). Habitat: on 60% ne slope on shady side of hill.
	559-2001	Plant from Botanic Garden of the Chicago Horticultural Society. From plant of known wild origin collected by North America-China Plant Exploration Consortium (NACPEC) 1996 Shaanxi & Gansu Province China Expedition Xiao Long Shan Forest Bureau, Guang Ying Forest Station, Wang Jia Gou, Tian Shui City District, Gansu Province, China (Zhonghua). Habitat: full sun in an area where goats are grazing, highly disturbed, 20% nw-facing slope, clay-loam.

Acer opalus Mill. ACERACEAE - MAPLE FAMILY
	USDA 6. ITALIAN MAPLE

	732-80	Cutting from The Morton Arboretum. From plant of known wild origin collected near Grenoble, Isere Department, France.

Acer pectinatum ssp. maximowiczii (Pax) A.E.Murray ACERACEAE - MAPLE FAMILY
	USDA 5. MAXIMOWICZ'S SNAKEBARK MAPLE, MAXIMOWICZ'S MAPLE, MAXIMOWICZ'S SNAKE-BARK MAPLE

	880-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected in Bai Long Jiang Forest Station / Ge'er Gou, Zhou Qu Shen County, Gansu Province, China (Zhonghua). Habitat: steep n-running ravine in mesic mixed decid./conif. forest on 45 deg e-slope, on thin rocky soil.

Acer platanoides L. ACERACEAE - MAPLE FAMILY
	USDA 3. NORWAY MAPLE

	919-61	Plant from Hooks Nursery. Garden collected.
	204-U	Unknown from unknown. Unknown collected.

Acer pycnanthum K.Koch ACERACEAE - MAPLE FAMILY
	USDA 6. JAPANESE RED MAPLE

	552-2000	Cutting from The Morton Arboretum. From plant of known wild origin collected, Japan. Habitat: Native trees.

Acer rubrum L. ACERACEAE - MAPLE FAMILY
	USDA 3. RED MAPLE

	1232-22	Plant from L. E. Williams Nursery Co. Garden collected.
	1030-27	Graft from Botanischer Garten und Botanisches Museum Berlin-Dahlem. Garden collected.
	769-38	Graft from Göteborg Botanical Garden. Garden collected.
	770-38	Graft from L. Spaeth. Garden collected.
	135-40	Plant from Cole Nursery Co. Garden collected.
	124-52	Graft from County of Monroe Department of Parks. Garden collected.
	598-57	Graft from The Morton Arboretum. Garden collected.
	599-57	Graft from The Morton Arboretum. Garden collected.
	910-57	Plant from The Morton Arboretum Research Program. Wild collected near Boulder Junction, Wisconsin. Habitat: sandy lake shore.
	368-58	Plant from William H. Collins, The Cole Nursery Co. Garden collected.
	928-61	Plant from The Morton Arboretum. Garden collected.
	184-65	Plant from Cole Nursery Co. Garden collected.
	258-70	Graft from Staff, The Morton Arboretum. Garden collected by George H. Ware from a cultivated tree near the carriage house at Arbor Lodge State Park, Nebraska City, Nebraska.
	322-81	Seed from Stan Tyson, Horticultural Propagation Ltd. Wild collected, Brown County, Illinois. Habitat: cool moist ravine.
	403-83	Cutting from The Morton Arboretum. From plant of known wild origin collected near Boulder Junction, Wisconsin. Habitat: sandy lake shore.
	431-83	Seed from Montreal Botanic Garden. Wild collected, Quebec Province, Canada. Habitat: marshy woods.
	6-U	Unknown from unknown. Unknown collected.

Acer saccharum f. rugelii (Pax) Palmer & Steyerm. ACERACEAE - MAPLE FAMILY
	USDA 6. SUGAR MAPLE

	239-67	Graft from The Morton Arboretum. Garden collected.

Acer 'Senecaense' ACERACEAE - MAPLE FAMILY
	USDA 6. SENECA MAPLE

	126-52	Graft from County of Monroe Department of Parks. Garden collected.

Acer stachyophyllum ssp. betulifolium (Maxim.) DeJong ACERACEAE - MAPLE FAMILY
	USDA 5. BIRCH-LEAVED MAPLE, BIRCHLEAF MAPLE

	854-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected in Lianhua Shan National Nature Reserve, Kang Le Shen County, Gansu Province, China (Zhonghua). Habitat: mesic decid. forest, steep 45 deg se-slope along stream edge in steep cool ravine; rocks mixed with organic soil.
	867-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected by X. Sun, Gansu Province, China (Zhonghua).

Acer tataricum L. ACERACEAE - MAPLE FAMILY
	USDA 3. TATARIAN MAPLE

	591-28	Seed from Botanischer Garten und Botanisches Museum Berlin-Dahlem. Garden collected.
	62-59	Seed from Main Botanical Garden of Kazakh Academy of Sciences. Garden collected.
	134-81	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected southwest of Povorino, Novoknopersk Dist., Russian S.F.S.R., U.S.S.R. Habitat: sandy steppe to oak-poplar forest transition.

Acer truncatum Bunge ACERACEAE - MAPLE FAMILY
	USDA 5. SHANTUNG MAPLE, PURPLEBLOW MAPLE

	564-37	Seed from Johannes Rafn & Son. Garden collected.
	395-54	Graft from Michigan State College. Garden collected.
	289-81	Seed from Chinese Academy of Forestry, Research Institute of Forestry. Wild collected, China (Zhonghua). Habitat: temperate region of N and NW China.

Acer turkestanicum Pax ACERACEAE - MAPLE FAMILY
	USDA 6. TURKESTAN MAPLE

	290-59	Seed from Botanical Garden of the Botanical Institute. Garden collected.
	191-99	Seed from Universitatea de Vest "Vasile Goldis" ARAD Gradina Botanica. Garden collected.

Acer 'Warrenred' Patent 7433 ACERACEAE - MAPLE FAMILY
	USDA 4B. PACIFIC SUNSETÒ

	96-91	Plant from J. Frank Schmidt & Son Co. Garden collected.

Actaea spicata L. (HERBACEOUS) RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5. BLACK BANEBERRY

	79-2002	Seed from Botanischer Garten der Universitat Zurich. Wild collected by unknown at Zillwald, Lax, Valais Canton, Switzerland.

Actinidia arguta (Siebold & Zucc.) Miq. ACTINIDIACEAE - ACTINIDIA FAMILY
	USDA 5. HARDY KIWI

	176-78	Seed from Botanical Garden, Tohoku University. Garden collected.
	288-88	Cutting from The Morton Arboretum. Garden collected.
	310-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: vineyard in upland woodland on cool moist north slope.
	331-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yong Xiu Gou (Valley with Beautiful Clouds), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: on other plants in understory forest above the stream bed.

Actinidia kolomikta (Maxim. & Rupr.) Maxim. ACTINIDIACEAE - ACTINIDIA FAMILY
	USDA 5. HARDY KIWI

	675-80	Seed from Tallinn Botanical Garden of the Estonian Academy of Sciences. Wild collected in the Ussuri region, Russian S.F.S.R., U.S.S.R.
	289-88	Cutting from The Morton Arboretum. From plant of known wild origin collected in the Ussuri region, Russian S.F.S.R., U.S.S.R.
	273-90	Seed from Staff, The Morton Arboretum. Wild collected in the Feng lin Preserve in the Wu ying division of the town of Yichun, Heilongjiang Sheng Province, China (Zhonghua). Habitat: edge of birch-fir forest.

Actinidia polygama (Siebold & Zucc.) Maxim. ACTINIDIACEAE - ACTINIDIA FAMILY
	USDA 6. HARDY KIWI, SILVER VINE

	167-77	Cutting from Staff, The Morton Arboretum. Garden collected.
	138-92	Cutting from The Morton Arboretum. Garden collected.

Adenophora pereskiifolia (Fisch.) G.Don (HERBACEOUS) CAMPANULACEAE - BELLFLOWER FAMILY
	USDA 7. LADYBELLS

	374-97	Seed from Midwest Plant Collecting Collaborative (MWPCC) 1997 Russia Far East Expedition. Wild collected, Rossiya (Russia) Republic, Russia. Habitat: in Quercus mongolica forest.

Aesculus x arnoldiana Sarg. HIPPOCASTANACEAE - BUCKEYE FAMILY
	USDA 5. ARNOLD BUCKEYE

	680-36	Graft from Arnold Arboretum of Harvard University. Garden collected.
	536-60	Graft from The Morton Arboretum. Garden collected.

Aesculus x carnea 'Fort McNair' HIPPOCASTANACEAE - BUCKEYE FAMILY
	USDA 4. FORT MCNAIR RED HORSE-CHESTNUT

	556-2005	Plant from Mariani Landscape/Design Build Maintenance. Garden collected.

Aesculus x dupontii Sarg. HIPPOCASTANACEAE - BUCKEYE FAMILY
	USDA 5. DUPONT'S BUCKEYE

	264-42	Graft from The Morton Arboretum. Garden collected.
	694-55	Graft from The Morton Arboretum. Garden collected.

Aesculus glabra Willd. HIPPOCASTANACEAE - BUCKEYE FAMILY
	USDA 4. OHIO BUCKEYE

	2669-22	Seed from Arnold Arboretum of Harvard University. Garden collected.
	1608-23	Plant from Maywood Nursery Co. Garden collected.
	1805-23	Seed from Ernest J. Palmer. Wild collected Eddyville, Kentucky.
	1808-23	Seed from Ernest J. Palmer. Wild collected near Galena, Stone County, Missouri.
	434-25	Graft from Arnold Arboretum of Harvard University. Garden collected.
	1386-25	Plant from Naperville Nurseries. Garden collected.
	952-26	Plant from Forest Nursery Co. Garden collected.
	389-32	Graft from The Morton Arboretum. Garden collected.
	681-36	Graft from Arnold Arboretum of Harvard University. Garden collected.
	1246-36	Seed from Edward Auten Jr. Garden collected.
	779-38	Graft from Botanical Garden, University of Helsinki. Garden collected.
	227-46	Graft from Arnold Arboretum of Harvard University. Garden collected.
	1228-57	Plant from The Morton Arboretum. Garden collected.
	894-58	Graft from Morris Arboretum of the University of Pennsylvania. Garden collected.
	488-66	Graft from Holden Arboretum. Garden collected.
	240-67	Graft from Arnold Arboretum of Harvard University. Garden collected.
	744-79	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn, Iroquois County, Illinois. Habitat: Grazed mesic woods next to a small creek.
	212-84	Plant from Rivendell Botanic Garden. Wild collected, Schuyler County, Illinois. Habitat: mesic oak-maple forest.
	179-92	Seed from Staff, The Morton Arboretum. Wild collected by Peter J. van der Linden along the west side of Thorn Creek, north of Sauk Lake spillway, Cook County, Illinois. Habitat: in floodplain forest along a creek.
	74-94	Plant from Western DuPage Landscaping. Garden collected.
	169-94	Plant from Klehm Nursery. Garden collected.
	10-U	Unknown from unknown. Unknown collected.

Aesculus hippocastanum L. HIPPOCASTANACEAE - BUCKEYE FAMILY
	USDA 3. HORSE-CHESTNUT

	1304-24	Plant from H. Kohankie & Son. Garden collected.
	467-47	Seed from The Morton Arboretum. Garden collected.
	1034-60	Seed from Gradina Botanica a Universitatii din Bucuresti. Garden collected.
	163-94	Plant from Klehm Nursery. Garden collected.
	11-U	Unknown from unknown. Unknown collected.

Aesculus pavia L. HIPPOCASTANACEAE - BUCKEYE FAMILY
	USDA 5. RED BUCKEYE

	400-54	Graft from The Morton Arboretum. Garden collected.
	820-57	Plant from Forest Nursery Co. Garden collected.
	895-58	Graft from The Morton Arboretum. Garden collected.
	562-59	Graft from Dawes Arboretum. Garden collected.
	724-73	Seed from Callaway Gardens. Garden collected.
	591-2004	Plant from Herman Losely and Son, Inc. Garden collected.
	773-2005	Plant from Snow Hill Nursery. Garden collected.

Aesculus sylvatica W.Bartram HIPPOCASTANACEAE - BUCKEYE FAMILY
	USDA 5. PAINTED BUCKEYE

	714-26	Plant from Hermann A. Hesse Baumschulen. Garden collected.

Akebia quinata (Houtt.) Decne. LARDIZABALACEAE - LARDIZABALA FAMILY
	USDA 5. FIVE-LEAVED AKEBIA

	131-80	Cutting from The Morton Arboretum. Garden collected.

Akebia trifoliata (Thunb.) Koidz. LARDIZABALACEAE - LARDIZABALA FAMILY
	USDA 5. THREE-LEAVED AKEBIA

	451-78	Cutting from The Morton Arboretum. Garden collected.

Albizia julibrissin var. rosea (Carriere) Mouill. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 7. PINK SILK-TREE, PINK MIMOSA-TREE

	504-48	Plant from Arnold Arboretum of Harvard University. Garden collected.
	747-50	Plant from Arnold Arboretum of Harvard University. Garden collected.

Alnus glutinosa (L.) Gaertn. BETULACEAE - BIRCH FAMILY
	USDA 3. EUROPEAN BLACK ALDER, BLACK ALDER, EUROPEAN ALDER

	429-63	Plant from The Morton Arboretum. Wild collected east of Illinios Route 53 bridge over the Du Page River in the Morton Arboretum, Lisle, Du Page County, Illinois. Habitat: river bank.
	357-79	Seed from Institut for dendrologi og planteskoledrift Norges landbrukshogskole (pre-1986). Wild collected, Norway.
	490-85	Plant from Matt Tures Sons Nursery. Garden collected.
	301-86	Seed from Zemaljski Muzej SR BiH Botanicki Vrt (Botanical Garden of Sarajevo). Wild collected Bosna, kod Sarajeva, Yugoslavia.
	75-94	Plant from Western DuPage Landscaping. Garden collected.
	82-95	Seed from Arboretum National des Barres, Ecole Nationale des Eaux et Forets. Wild collected, Artvin Province, Black Sea Region, Turkey.
	1309-2004	Plant from Mariani Nursery. Garden collected.

Alnus hirsuta (Spach) Rupr. BETULACEAE - BIRCH FAMILY
	USDA 6. MANCHURIAN ALDER

	76-84	Plant from United States National Arboretum. Wild collected Hokkaido University Tomakomai Experimental Forest, Tomokamai-shi, Hokkaido Prefecture, Hokkaido Region, Japan.
	469-84	Seed from Botanical Garden of the Latvian Academy of Sciences. Wild collected Vladivostok, Promontorium Peszczaniji, Russian S.F.S.R., U.S.S.R. Habitat: In decivibus lapidosis collium.
	575-2000	Seed from Morris Arboretum of the University of Pennsylvania. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition on Changbai Shan, Red Stone Forestry Farm, Antu County, Jilin Province, China (Zhonghua). Habitat: in roadside ditch bordering forest.

Alnus incana (L.) Moench BETULACEAE - BIRCH FAMILY
	USDA 2. EUROPEAN WHITE ALDER

	73-79	Seed from Jardin Botanique. Wild collected, Geneve Canton, Switzerland.
	279-79	Seed from Botanic Garden of Natural Science Faculty of Komensky University. Wild collected Horehronske Podolie, Bacuch, Czechoslovakia.
	321-79	Seed from Ringve Botaniske Hage Universitet i Trondheim Ringve Bot. Gard., Norwegian U. of Sci. & Tech., NTNU. Wild collected Trondheim, Leinora, Sor-Trondelag County, Norway.
	450-79	Seed from Botanical Garden and Museum, University of Oslo. Wild collected by unknown Vaga, Tessanden, Oppland County, Norway.
	75-85	Seed from Jardin Botanique Alpin Et. Station D`Ecologie Vegetale "La Jaysinia". Wild collected from northwestern Alps near les Saix, Haute-Savoie Department, France.
	508-2004	Plant from Charles J. Fiore Company, Inc. Garden collected.

Alnus japonica (Thunb.) Steud. BETULACEAE - BIRCH FAMILY
	USDA 5. JAPANESE ALDER

	898-58	Graft from County of Monroe Department of Parks. Garden collected.
	172-75	Seed from Hillier & Sons Nursery. Garden collected.
	416-83	Seed from Botanical Garden of the Latvian State University. Wild collected Primorsk-Perevoznoje in the Hassanensis district, Russian S.F.S.R., U.S.S.R. Habitat: pratum paludosum.
	466-83	Cutting from The Morton Arboretum. Garden collected.
	77-84	Plant from United States National Arboretum. Wild collected East of Kushiro, along Highway 44, Kushiro-shi, Hokkaido Prefecture, Hokkaido Region, Japan.

Alnus matsumurae Callier BETULACEAE - BIRCH FAMILY
	USDA 6. MATSUMURA ALDER

	84-95	Seed from Arboretum National des Barres, Ecole Nationale des Eaux et Forets. Wild collected at Myoukou-Mura, Nakakubiki-Gun, Niigata-ken Prefecture, Chubu Region, Japan.

Alnus serrulata (Aiton) Willd. BETULACEAE - BIRCH FAMILY
	USDA 5. HAZEL ALDER, COMMON ALDER, SMOOTH ALDER, TAG ALDER

	273-79	Seed from Staff, The Morton Arboretum. Wild collected by George H. Ware near Y-City, Arkansas. Habitat: in mixed pine-oak forest along a stream.
	520-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn Ozark Nat'l Scenic Riverway just west of Albey Springs, Shannon County, Missouri. Habitat: along the edge of the Jacks Fork River.
	377-88	Seed from The Morton Arboretum Research Program. Wild collected by Raymond F. Schulenberg Marble Creek, Madison County, Missouri.
	1163-2004	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2004 Ozark Expedition. Wild collected Pruitt Ranger Station, Buffalo National River, Newton County, Arkansas. Habitat: flat riverine forest in gravel.

Alnus sibirica Fisch. ex Komar. BETULACEAE - BIRCH FAMILY
	USDA 3. SIBERIAN ALDER

	313-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: moist streamside in disturbed area.

Amelanchier alnifolia Nutt. ROSACEAE - ROSE FAMILY
	USDA 5. SASKATOON SERVICEBERRY

	831-59	Seed from University of Alberta Department of Botany. Wild collected, Alberta Province, Canada.
	802-65	Plant from Evergreen Nursery Co., Inc. Garden collected, North Dakota.
	323-67	Seed from Morden Research Station, Research Branch, Canada Agriculture. Wild collected 4 mi. north & 4 mi. west of Morden, Manitoba Province, Canada.

Amelanchier 'Ballerina' ROSACEAE - ROSE FAMILY
	USDA 4. BALLERINA SERVICEBERRY

	220-95	Plant from Klehm Nursery. Garden collected.
	115-2000	Plant from Klehm Nursery. Garden collected.

Amelanchier x grandiflora Rehder ROSACEAE - ROSE FAMILY
	USDA 4. APPLE SERVICEBERRY

	68-92	Plant from Klehm Nursery. Garden collected.
	116-2000	Plant from Hinsdale Nurseries Inc. Garden collected.
	463-2001	Plant from American Gardens, Inc. Garden collected.

Amelanchier x grandiflora 'Autumn Brilliance' Patent 5717 ROSACEAE - ROSE FAMILY
	USDA 4. AUTUMN BRILLIANCE APPLE SERVICEBERRY

	257-2003	Plant from Beeson's McHenry County Nursery, Inc. Garden collected.
	786-2004	Plant from Poplar Farms Nursery & Produce Inc. Garden collected.
	1082-2004	Plant from King Nursery. Garden collected.
	1311-2004	Plant from Mariani Nursery. Garden collected.
	243-2005	Plant from Wilson Nurseries, Inc. Garden collected.
	251-2005	Plant from Mariani Nursery. Garden collected.
	510-2005	Plant from Charles J. Fiore Company, Inc. Garden collected.
	579-2005	Plant from Horticultural Associates of Rochester, Inc. Garden collected.
	17-2010	Plant from Bailey Nurseries, Inc. Garden collected.

Amelanchier x grandiflora 'Princess Diana' Patent 6041 ROSACEAE - ROSE FAMILY
	USDA 4. PRINCESS DIANA APPLE SERVICEBERRY

	69-87	Plant from Christom Farms Nursery. Garden collected.
	1301-2004	Plant from LaPorte County Nursery. Garden collected.
	755-2005	Plant from James Nursery, Inc. Garden collected.

Amelanchier laevis Wiegand ROSACEAE - ROSE FAMILY
	USDA 4. ALLEGHENY SERVICEBERRY, ALLEGHENY SHADBLOW

	160-41	Plant from H. Kohankie & Son. Garden collected.
	420-43	Plant from Northeastern Forestry Co. Garden collected.
	1054-56	Seed from The Morton Arboretum. Garden collected.
	257-61	Plant from Horton Nurseries, Inc. Garden collected.
	515-64	Seed from Staff, The Morton Arboretum. Wild collected Dewberry Hill, Mr. Kammerer's Cottage, St. Joseph County, Michigan. Habitat: bog in deep shade.
	533-80	Seed from Beal-Garfield Botanic Garden, Michigan State University. Wild collected Middle Island, Marquette County, Michigan. Habitat: rocky thicket.
	338-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along Otter Creek in Le Roy Oakes Forest Preserve, Kane County, Illinois. Habitat: n-facing creek slope.
	2-90	Seed from Montreal Botanic Garden. Wild collected in eastern sections, Canada. Habitat: "in sylvis rarioribus".
	822-2004	Plant from Studebaker Nurseries, Inc. Garden collected.
	958-2004	Plant from Wilson Nurseries, Inc. Garden collected.
	205-U	Unknown from unknown. Unknown collected.

Amelanchier laevis 'Snowcloud' ROSACEAE - ROSE FAMILY
	USDA 4. SNOWCLOUD ALLEGHENY SERVICEBERRY

	149-2005	Plant from J. Frank Schmidt & Son Co. Garden collected.

Amelanchier ovalis Medik. ROSACEAE - ROSE FAMILY
	USDA 5. GARDEN SERVICEBERRY

	86-59	Seed from Leningrad Botanical Garden. Wild collected by unknown in parks and woods, Moldavian S.S.R., U.S.S.R.
	136-81	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected Mt. Mashuk above Pyatigorsk, in northern Caucasus Mtns, U.S.S.R. Habitat: xeric meadow.
	244-81	Seed from Jardin Botanique, Institute de Botanique Universite de Neuchatel. Wild collected by unknown Bedeilhac, Tarascon, Pyrenees, France.
	289-83	Seed from Forstbotanischer Garten der Techischen Universitat Dresden Sektion Forstwirtschaft. Wild collected near Saalfeld Urban District, Gera District, German Democratic Republic.
	378-84	Seed from Arboretum Novy Dvur u Opavy Slezske Muzeum. Wild collected Crua Gora, Montes Lovun, Bukovica, Montenegro Republic, Yugoslavia.
	52-2002	Seed from Arnold Arboretum of Harvard University. Wild collected Zhirnovskiy District, Rossiya (Russia) Republic, Russia.

Amelanchier sanguinea (Pursh) DC. ROSACEAE - ROSE FAMILY
	USDA 4. ROUND-LEAVED SERVICEBERRY, ROUNDLEAF JUNEBERRY, ROUNDLEAF SERVICEBERRY, ROUNDLEAF SHADBLOW

	543-79	Plant from Staff, The Morton Arboretum. Wild collected by Gerould Wilhelm S. edge of Bluff City Cemetery, S. edge of Elgin, Cook County, Illinois.
	352-81	Plant from Stan Tyson, Horticultural Propagation Ltd. Wild collected by unknown Bluff City Fen, Cook County, Illinois. Habitat: fen.
	408-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn small island at east end of Waubee Lake, Oconto County, Wisconsin.
	65-86	Seed from Beal-Garfield Botanic Garden, Michigan State University. Wild collected, Marquette County, Michigan. Habitat: streambank.

Amelanchier spicata (Lam.) K.Koch ROSACEAE - ROSE FAMILY
	USDA 4. DWARF SERVICEBERRY

	1979-25	Seed from Arnold Arboretum of Harvard University. Garden collected.

Amelanchier stolonifera Wiegand ROSACEAE - ROSE FAMILY
	USDA 5. RUNNING SERVICEBERRY

	14-41	Plant from Kallay Brothers Company. Garden collected.
	746-80	Plant from unknown. Unknown collected.
	152-96	Plant from Charles J. Fiore Company, Inc. Garden collected.

Amorpha fruticosa L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 5. INDIGO-BUSH, FALSE-INDIGO, DESERT INDIGO-BUSH

	181-63	Seed from Staff, The Morton Arboretum. Wild collected by Floyd A. Swink along the Rock River on the Lorado Taft Campus of Northern Illinois University near Oregon, Ogle County, Illinois. Habitat: riverside.
	238-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg along the Fox River west of Milbrook, Kendall County, Illinois. Habitat: river bank.
	76-94	Plant from Western DuPage Landscaping. Garden collected.

Amorpha fruticosa var. angustifolia Pursh FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 3. NARROW-LEAVED INDIGO-BUSH, NARROW-LEAVED FALSE-INDIGO, NARROW-LEAVED DESERT INDIGO-BUSH

	333-82	Cutting from The Morton Arboretum. Garden collected.
	381-86	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg north side of US 160, Ozark County, Missouri. Habitat: rocky stream bed.

Amorpha glabra Desf. ex Poir. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. MOUNTAIN INDIGO-BUSH

	334-82	Cutting from The Morton Arboretum. Garden collected.

Amorpha nana Nutt. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 4. DWARF INDIGO-BUSH, FRAGRANT FALSE INDIGO

	186-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg northwest of Mobridge, Corson County, South Dakota.
	684-80	Seed from Morden Research Station, Research Branch, Canada Agriculture. Garden collected.

Ampelopsis bodinieri (H.Lev. & Vent.) Rehder VITACEAE - GRAPE FAMILY
	USDA 5. BODINIER'S AMPELOPSIS

	259-2002	Seed from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. Wild collected by Tiecheng Cui, Xian Botanical Garden from Caiziping to Xinchang, Ningxi Forest Preserve, Ningshan County, Shaanxi Province, China (Zhonghua). Habitat: on 15 deg. e-facing slope.

Ampelopsis brevipedunculata (Maxim.) Trautv. VITACEAE - GRAPE FAMILY
	USDA 5. PORCELAIN VINE, PORCELAIN BERRY, TORQUOIS VINE, TORQUOIS BERRY

	220-83	Seed from Aritaki Arboretum. Wild collected Oshimo-Mura near Mt. Fuji, Yamanashi-ken Prefecture, Chubu Region, Japan.
	402-84	Cutting from The Morton Arboretum. Garden collected.

Ampelopsis brevipedunculata var. maximowiczii (Regel) Rehder VITACEAE - GRAPE FAMILY
	USDA 5. MAXIMOWICZ'S PORCELAIN VINE, MAXIMOWICZ'S PORCELAIN BERRY, MAXIMOWICZ'S TORQUOIS BERRY, MAXIMOWICZ'S TORQUOIS VINE

	700-63	Plant from unknown. Unknown collected.
	496-83	Cutting from The Morton Arboretum. Unknown collected.
	235-85	Cutting from The Morton Arboretum. Garden collected.

Ampelopsis cordata Michx. VITACEAE - GRAPE FAMILY
	USDA 4. RACCOON-GRAPE

	208-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg Spoon River, west of Havana, Fulton County, Illinois. Habitat: Floodplain.
	523-81	Seed from Stan Tyson, Horticultural Propagation Ltd. Wild collected along the Illinois River, Schuyler County, Illinois. Habitat: floodplain forest.

Ampelopsis delavayana Planch. VITACEAE - GRAPE FAMILY
	USDA 5. DELAVAY'S AMPELOPSIS

	291-88	Cutting from The Morton Arboretum. Garden collected Tiahua Mountain, Anhui Province, China (Zhonghua).

Ampelopsis japonica (Thunb.) Makino VITACEAE - GRAPE FAMILY
	USDA 7.

	232-93	Seed from Matthaei Botanical Gardens, The University of Michigan. Wild collected by David Michener, Matthaei Botanical Gardens, The University of Michigan above the Razdolna river less than 6 km. from the Chinese border west of Chernyatino (west of Ussursk), Rossiya (Russia) Republic, Russia. Habitat: steppe woodland on hills and slopes.

Andrachne colchica Fisch. & C.A.Mey. EUPHORBIACEAE - SPURGE FAMILY
	USDA 6. CAUCASIAN-SPURGE

	1103-57	Cutting from The Morton Arboretum. Garden collected.

Andromeda glaucophylla Link ERICACEAE - HEATH FAMILY
	USDA 2. BOG-ROSEMARY

	188-2003	Cutting from The Morton Arboretum. From plant of known wild origin collected, Marquette County, Michigan. Habitat: leatherleaf bog.

Aralia elata (Miq.) Seem. ARALIACEAE - GINSENG FAMILY
	USDA 3. ANGELICA-TREE

	2356-26	Seed from U.S.D.A., Seed and Plant Introduction (S.P.I). Garden collected.
	288-79	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Garden collected.
	720-80	Plant from unknown. Unknown collected.
	314-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Fen Ling Preserve, Y. Wuying, Heilongjiang Sheng Province, China (Zhonghua).

Aralia nudicaulis L. ARALIACEAE - GINSENG FAMILY
	USDA 3. WILD SARSPARILLA

	369-83	Plant from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg along Willow Creek in Rock Cut State Park, Winnebago County, Illinois. Habitat: ne-facing limestone cliff edge.

Aralia spinosa L. ARALIACEAE - GINSENG FAMILY
	USDA 4. DEVIL'S WALKING STICK

	262-78	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected Innisfree, Millbrook, New York. Habitat: woodland edge.
	436-99	Plant from Reeseville Ridge Nursery. Wild collected by Darrell Kromm, Reeseville Ridge Nursery from Rimrock area of Shawnee Hills, Illinois.
	612-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected on Cahas Mt., Franklin County, Virginia.
	1053-2004	Plant from Valley Crest Landscape Development. Garden collected.

Araucaria bidwillii Hook. ARAUCARIACEAE - ARAUCARIA FAMILY
	USDA 9 - 11. BUNYA BUNYA, BUNYA-PINE, FALSE MONKEYPUZZLE TREE, FALSE MONKEY PUZZLE TREE

	457-2010	Plant from Joe Malone. Garden collected.

Aristolochia durior Hill ARISTOLOCHIACEAE - BIRTHWORT FAMILY
	USDA 5. DUTCHMAN'S PIPE

	185-89	Seed from Staff, The Morton Arboretum. Wild collected by Ross C. Clark along US highway 250 right-of-way, on Cheat Mountain, Randolph County, WV. Habitat: w-facing slope in mixed woods.

Aristolochia manshuriensis Komar. ARISTOLOCHIACEAE - BIRTHWORT FAMILY
	USDA 5. MANCHURIAN PIPE VINE

	526-82	Seed from Botanical Garden of the Kirghiz Academy of Science. Garden collected.
	48-91	Seed from Magnolia Society c/o Mr. Ray Tessmer, seed chairman. Wild collected by C. Ferris Miller (Min, Pyong-gal), Chollipo Arboretum exact site not noted, Republic of Korea.

Aristolochia tomentosa Sims ARISTOLOCHIACEAE - BIRTHWORT FAMILY
	USDA 5. WOOLY DUTCHMAN'S PIPE

	206-81	Seed from The Morton Arboretum Research Program. Wild collected, Stone County, Arkansas.
	378-88	Seed from The Morton Arboretum Research Program. Wild collected by Raymond F. Schulenberg, Douglas County, Missouri.
	3-93	Seed from Tom Dilatush. Wild collected along the north fork of the White River, 1/4 mi. south of Twin Bridges of Rtes 181 & 14, Douglas County, Missouri.
	155-2001	Seed from The North Carolina Arboretum The University of North Carolina. Wild collected by unknown along the Mississippi River in Meeman-Shelby Forest, Shelby County, Tennessee. Habitat: floodplain.

Aronia arbutifolia (L.) Pers. ROSACEAE - ROSE FAMILY
	USDA 5. RED CHOKEBERRY

	482-80	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected New Jersey Pine Barrens, along Rte. 539, Ocean County, New Jersey. Habitat: Savannah.
	497-83	Cutting from The Morton Arboretum. Garden collected.
	72-99	Seed from United States National Arboretum. Wild collected in Blackwater National Wildlife Refuge, Dorchester County, Maryland.
	959-2004	Plant from Wilson Nurseries, Inc. Garden collected.
	968-2004	Plant from Midpark Nurseries, Inc. Garden collected.
	1049-2005	Plant from unknown. Garden collected.

Aronia melanocarpa (Michx.) Elliott ROSACEAE - ROSE FAMILY
	USDA 3. BLACK CHOKEBERRY

	246-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg in Henpeck bog, Kane County, Illinois. Habitat: bog.
	34-97	Plant from Hinsdale Nurseries Inc. Garden collected.
	397-2001	Seed from Brooklyn Botanic Garden and Arboretum. Wild collected by unknown along Hall Road, Black Rock Forest, Cornwall, Orange County, New York.

Aronia prunifolia 'Viking' ROSACEAE - ROSE FAMILY
	USDA 5. VIKING PURPLE CHOKEBERRY

	81-2006	Plant from Spring Meadow Nursery, Inc. Garden collected.
	143-2006	Plant from Studebaker Nurseries, Inc. Garden collected.

Artemisia alba Turrill ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 7. CAMPHOR WORMWOOD

	179-86	Plant from Sunnybrook Farms Nursery. Garden collected.
	169-89	Plant from T & Z Nursery. Garden collected.

Artemisia cana Pursh ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 3. DWARF SAGEBRUSH

	2-81	Seed from Peter Lesica. From plant of known wild origin collected from hills southwest of Bozeman, Gallatin County, Montana.
	11-81	Seed from Devonian Botanic Garden University of Alberta. Wild collected site not given, Alberta Province, Canada.

Artemisia pontica L. ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 6. ROMAN WORMWOOD

	687-79	Seed from Hortus Botanicus 'Soroksarensis' Universitatis Hortuculturae Alimentario-Technieaque. Wild collected Balatonakaratlya, Hungary. Habitat: solo calcareo.
	780-80	Cutting from The Morton Arboretum. Garden collected.

Artemisia stelleriana Besser ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 2. DUSTY MILLER, BEACH WORMWOOD

	310-83	Seed from Tallinn Botanical Garden of the Estonian Academy of Sciences. Wild collected southern Kuril Islands, Russian S.F.S.R., U.S.S.R.

Arundinaria gigantea (Walter) Chapm. POACEAE (GRAMINEAE) - GRASS FAMILY
	USDA 7. GIANT CANE, GIANT REED, REED CANE, CANE REED

	51-86	Plant from Stan Tyson, Horticultural Propagation Ltd. Wild collected along the Mississippi River, Randolph County, Illinois. Habitat: base of river bluff.

Aster sagittifolius Willd. (HERBACEOUS) ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 3. ARROW-LEAVED ASTER, COMMON BLUE WOOD ASTER, SWORD-LEAVED WOOD ASTER

	938-2004	Plant from various commercial sources. Garden collected.

Astilbe chinensis 'Purpurkerze' (HERBACEOUS) SAXIFRAGACEAE - SAXIFRAGE FAMILY
	USDA 5. PURPLE CANDLES CHINESE ASTILBE

	271-2004	Plant from various commercial sources. Garden collected.

Astilbe chinensis 'Veronica Klose' (HERBACEOUS) SAXIFRAGACEAE - SAXIFRAGE FAMILY
	USDA 5. VERONICA KLOSE CHINESE ASTILBE

	862-2004	Plant from various commercial sources. Garden collected.

Astilbe koreana Nakai (HERBACEOUS) SAXIFRAGACEAE - SAXIFRAGE FAMILY
	USDA 7. KOREAN ASTILBE

	360-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. Wild collected, Changbai County, Jilin Province, China (Zhonghua). Habitat: in disturbed upland forest on 5 degree north slope.

Atriplex canescens (Pursh) James CHENOPODIACEAE - GOOSEFOOT FAMILY
	USDA 7. HOARY SALTBUSH

	11-79	Seed from U.S.D.A., Soil Conservation Service Plant Materials Center. Garden collected.
	912-80	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn N. of Alt. US l6 in SE. corner of Badlands Nat. Park, Jackson County, South Dakota.

Aurinia saxatilis (L.) Desv. BRASSICACEAE (CRUCIFERAE) - MUSTARD FAMILY
	USDA 6. GOLDENTUFT

	198-78	Seed from Botanischer Garten der Karl-Marx-Universitat. Garden collected.
	273-2007	Division from The Morton Arboretum. Garden collected.

Baccharis halimifolia L. ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 5. GROUNDSEL-TREE

	391-79	Seed from Jardin Botanique de la Ville Service des Plantations. Garden collected.
	658-80	Seed from Bowman's Hill State Wildflower Preserve, Washington Crossing State Park. Wild collected, New Jersey.

Baccharis salicina Torr. & Gray ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 4. WILLOW BACCHARIS, WILLOW GROUNDSEL

	513-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn 0.5 mi south of Aetna, Barber County, Kansas. Habitat: growing in the sandy floodplain of a small creek.
	231-90	Cutting from The Morton Arboretum. From plant of known wild origin collected by Edward Hedborn 0.5 mi south of Aetna, Barber County, Kansas. Habitat: growing in the sandy floodplain of a small creek.

Belamcanda chinensis (L.) DC. (HERBACEOUS) IRIDACEAE - IRIS FAMILY
	USDA 8. BLACKBERRY-LILY, LEOPARD FLOWER

	190-2005	Plant from various commercial sources. Garden collected.
	235-2008	Plant from various commercial sources. Garden collected.

Berberis amurensis Rupr. BERBERIDACEAE - BARBERRY FAMILY
	USDA 6. AMUR BARBERRY

	600-2001	Plant from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition Da Zhuang Ke (Old Village) Song Shan Forest Preserve, Yanqing County, Beijing Shi Municipality, China (Zhonghua). Habitat: in full sun in an open dry area in loamy soils among bolders.

Berberis beaniana C.K.Schneid. BERBERIDACEAE - BARBERRY FAMILY
	USDA 6. PURPLE-FRUITED BARBERRY

	444-96	Cutting from The Morton Arboretum. Garden collected.

Berberis koreana Palib. BERBERIDACEAE - BARBERRY FAMILY
	USDA 4. KOREAN BARBERRY

	250-40	Plant from Bohlender Nurseries Company. Garden collected.
	104-48	Plant from Adams Nursery. Garden collected.

Berberis x mentorensis L.M.Ames BERBERIDACEAE - BARBERRY FAMILY
	USDA 5. MENTOR BARBERRY

	221-89	Cutting from The Morton Arboretum. Garden collected.

Berberis poiretii C.K.Schneid. BERBERIDACEAE - BARBERRY FAMILY
	USDA 5. POIRET'S BARBERRY

	2-2001	Plant from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. From plant of known wild origin collected by North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition Da Zhuang Ke (Old Village) Song Shan Forest Preserve, Yanqing County, Beijing Shi Municipality, China (Zhonghua). Habitat: in full sun in an open dry area in loamy soils among bolders.

Berberis 'Tara' BERBERIDACEAE - BARBERRY FAMILY
	USDA 4. EMERALD CAROUSELÒ

	846-2004	Plant from Zelenka Nursery, Inc. Garden collected.

Berberis thunbergii DC. BERBERIDACEAE - BARBERRY FAMILY
	USDA 5. JAPANESE BARBERRY

	550-63	Cutting from The Morton Arboretum. Garden collected.
	17-U	Unknown from unknown. Unknown collected.

Berberis thunbergii 'Antares' BERBERIDACEAE - BARBERRY FAMILY
	USDA 4. ANTARES PURPLE-LEAVED JAPANESE BARBERRY

	553-2000	Cutting from The Morton Arboretum. Garden collected.
	561-2001	Cutting from The Morton Arboretum. Garden collected.

Berberis thunbergii 'Bogozam' Patent 8215 (HERBACEOUS) BERBERIDACEAE - BARBERRY FAMILY
	USDA 4. BONANZA GOLDÔ

	31-97	Plant from Lake County Nursery, Inc. (Lake County Nursery Exchange). Garden collected.

Berberis virgetorum C.K.Schneid. BERBERIDACEAE - BARBERRY FAMILY
	USDA 6. BARBERRY

	454-78	Cutting from The Morton Arboretum. Garden collected.
	581-79	Cutting from The Morton Arboretum. Garden collected.

Berchemia racemosa Siebold & Zucc. RHAMNACEAE - BUCKTHORN FAMILY
	USDA 6. JAPANESE SUPPLEJACK

	805-60	Plant from U.S.D.A., Plant Introduction Station/Garden. Wild collected by John L. Creech, United States National Arboretum roadside below Shibuyu Onsen, Japan. Habitat: mountains.
	301-75	Cutting from The Morton Arboretum. From plant of known wild origin collected by John L. Creech below Shibuyu Onsen (hot spring), Yatsugataba Mountains, Nagano-ken Prefecture, Chubu Region, Japan. Habitat: sunny roadside places.

Berchemia scandens (Hill) K.Koch RHAMNACEAE - BUCKTHORN FAMILY
	USDA 6. SUPPLEJACK, ALABAMA SUPPLEJACK

	347-88	Seed from Staff, The Morton Arboretum. Wild collected by Peter J. van der Linden along Arkansas state Highway 9, 3 miles north of Sylamore, Izard County, Arkansas. Habitat: vine climbing on Ulmus alata in full sun in rocky upland.
	1179-2004	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2004 Ozark Expedition. Wild collected by Linda Ellis Linda Ellis homesite, Stone County, Missouri. Habitat: in dolomitic glade with bedrock at or near the surface.

Bergenia ciliata (Haw.) Sternb. (HERBACEOUS) SAXIFRAGACEAE - SAXIFRAGE FAMILY
	USDA 8. WINTER BERGENIA, WINTER PIGSQUEAK

	935-2005	Plant from various commercial sources. Garden collected.

Bergenia pacifica (Kom.) Kom. (HERBACEOUS) SAXIFRAGACEAE - SAXIFRAGE FAMILY
	USDA 4. USSURI BERGENIA, USSURI PIGSQUEAK

	375-97	Seed from Midwest Plant Collecting Collaborative (MWPCC) 1997 Russia Far East Expedition. Wild collected, Rossiya (Russia) Republic, Russia. Habitat: growing in very loose rock boulders on 60 degree w-facing slope.
	396-97	Seed from Midwest Plant Collecting Collaborative (MWPCC) 1997 Russia Far East Expedition. Wild collected, Rossiya (Russia) Republic, Russia. Habitat: on 60 degree w-facing slope in very loose rock boulders.
	397-97	Seed from Midwest Plant Collecting Collaborative (MWPCC) 1997 Russia Far East Expedition. Wild collected, Rossiya (Russia) Republic, Russia. Habitat: on flat hill.

Betula albosinensis Burkill BETULACEAE - BIRCH FAMILY
	USDA 6. CHINESE RED BIRCH

	444-2000	Seed from Shanghai Botanic Garden. Wild collected on Mt. Maiji, Gansu Province, China (Zhonghua). Habitat: in mixed forest on hill.
	304-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Wild collected in Mingyi Valley, Panquangou, Heng Jian Zhen, Jiaocheng County, Shanxi Province, China (Zhonghua). Habitat: spruce dominated woods, full sun, 45 deg. w-facing slope moist, acidic, well-drained, high humus soil.

Betula chinensis Maxim. BETULACEAE - BIRCH FAMILY
	USDA 4. CHINESE BIRCH

	79-91	Seed from Research Institute of Ecology and Botany Hungarian Academy of Sciences Botanical Garden. Wild collected by Geza Kosa, Research Institute of Ecology and Botany, Hungarian Academy of Sciences Botanical Garden Kumgang Mtns., south of Wonson, in central part of east coast, Kangwon Do Province, N. Korea. Habitat: mixed,rocky,broadleaved forest & pinewood on granite.
	371-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Tang Zhi Gou (Hot Spring Valley), Song Shan Forest Preserve, Beijing Shi Municipality, China (Zhonghua). Habitat: steep e-facing slope base, moist soils next to stream.

Betula costata Trautv. BETULACEAE - BIRCH FAMILY
	USDA 6. ELM-LEAVED BIRCH

	395-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Guang Ri Tuo (Hill Where Sunrise is Seen), Xiao Long Meng Forest Preserve, Dongling Shan, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: north-northeast slope in full sun, seasonally moist soils.
	331-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. Wild collected along Yalu River, Changbai County, Jilin Province, China (Zhonghua). Habitat: on rocky 45 degree northwest slope.
	218-98	Plant from Botanic Garden of the Chicago Horticultural Society. Wild collected by Midwest Plant Collecting Collaborative (MWPCC) 1997 Russia Far East Expedition east of Vladivostok, Rossiya (Russia) Republic, Russia. Habitat: mixed broadleaf & coniferous forest on 10 degree south facing slope under dense canopy.

Betula davurica Pall. BETULACEAE - BIRCH FAMILY
	USDA 5. DAHURIAN BIRCH

	82-55	Seed from Skinner's Nursery, Ltd. Garden collected.
	148-84	Plant from U.S.D.A., New York Agricultural Experiment Station, Regional Plant Introdution Station. From plant of known wild origin collected by unknown Mt. Tokyu, Ko Chun, Republic of Korea.
	347-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yunmeng Shan (Dense Cloud Mountain), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: near ridge top and down a w-facing slope in full to part-sun in well drained soil.
	369-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Tang Zhi Gou (Hot Spring Valley), Song Shan Forest Preserve, Beijing Shi Municipality, China (Zhonghua). Habitat: full sun to part shad, open wooded area near stream.
	388-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Mu Chang (Big Trunk Field), Baihua Shan Forest Preserve, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: path edges in partial sun on a west facing slope.
	324-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. Wild collected, Changbai County, Jilin Province, China (Zhonghua). Habitat: along disturbed roadside on 60 degree south slope.

Betula ermanii var. lanata Regel BETULACEAE - BIRCH FAMILY
	USDA 2. RUSSIAN ROCK BIRCH

	339-2000	Plant from The Morton Arboretum Research Program. Wild collected by , Rossiya (Russia) Republic, Russia.

Betula forrestii (W.W.Sm.) Hand.-Mazz. BETULACEAE - BIRCH FAMILY
	USDA 6. FORREST'S BIRCH

	430-73	Seed from Villa Taranto Botanic Gardens. Garden collected.

Betula glandulosa Michx. BETULACEAE - BIRCH FAMILY
	USDA 3. WESTERN BOG BIRCH

	105-65	Seed from Montana State College, Horticultural Department Agricultural Experiment Station. Wild collected by unknown along Belly River in Hudson Bay Drainage, Glacier National Park, Glacier County, Montana. Habitat: spruce grove.

Betula humilis Schrank BETULACEAE - BIRCH FAMILY
	USDA 2. EURASIAN SHRUB BIRCH

	333-59	Seed from Hannoversch-Munden Botanical Garden. Garden collected.
	427-79	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected Altai Mts. Ulagan Pass, above Ak-Tash, SW Siberia, Russian S.F.S.R., U.S.S.R.
	338-99	Seed from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected, Mongolia.

Betula lenta L. BETULACEAE - BIRCH FAMILY
	USDA 3. SWEET BIRCH, BLACK BIRCH, CHERRY BIRCH, MAHOGANY BIRCH, MOUNTAIN-MAHOGANY, SPICE BIRCH

	73-65	Seed from Arnold Arboretum of Harvard University. From plant of known wild origin collected by J. T. Dawson in Bussey Woods, Jamaica Plain, Suffolk County, Massachusetts.
	103-65	Seed from Central Experimental Farm Botanical Garden and Arboretum Ottawa Research Station, Ornamentals Section. Wild collected Port Dalhousie, Lincoln County, Ontario Province, Canada. Habitat: woodlands.
	314-81	Seed from George Landis Arboretum. Wild collected, New York. Habitat: native stands.
	518-82	Plant from Purdue University Department of Forestry. Wild collected, Campbell County, Tennessee.
	1-88	Seed from Staff, The Morton Arboretum. Wild collected by Ross C. Clark along Mayo River about 1 mile east of Stuart, Patrick County, Virginia. Habitat: low, riverside ground.

Betula maximowicziana Regel BETULACEAE - BIRCH FAMILY
	USDA 5. MONARCH BIRCH

	20-94	Seed from Botanical Garden, University of Helsinki 1993 Hokkaido, Japan Expedition. Wild collected about 12 km NNE of Teshio Foresry Headquarters, Teshio Experimental Forest of Hokkaido University, Rumoi District, Hokkaido Prefecture, Hokkaido Region, Japan. Habitat: secondary forest (birch/oak/kalopanaz/magnolia/sasa).
	186-2002	Seed from Sakhalin Botanical Garden Russian Academy of Sciences Far East Branch. Wild collected by unknown, Hokkaido Prefecture, Hokkaido Region, Japan.

Betula (maximowiczii x papyrifera) BETULACEAE - BIRCH FAMILY
	USDA 5. MONARCH-PAPER HYBRID BIRCH

	663-2006	Plant from Morris Arboretum of the University of Pennsylvania. Garden collected.

Betula microphylla Bunge BETULACEAE - BIRCH FAMILY
	USDA 4. LITTLE-LEAVED BIRCH

	428-79	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected Altai Mts. Byely Bom., SW Siberia, Russian S.F.S.R., U.S.S.R.
	204-93	Seed from 1993 Expedition to Russia (Gorno-Altai) Chicago BG, Holden Arb, Minn. Landsc. Arb, Mo. BG, & Morton Arb. Wild collected by Peter J. van der Linden, The Morton Arboretum along a stream near road from Ust-Kan to Ust-Koksa, just n. of Sugash village about 70 km. nw. of Ust-Koksa, Gorno-Altayskaya Autonomous Region, Russia. Habitat: low ground.

Betula nigra L. BETULACEAE - BIRCH FAMILY
	USDA 5. RIVER BIRCH, RED BIRCH

	232-51	Plant from Arnold Arboretum of Harvard University. Garden collected.
	54-81	Plant from Stan Tyson, Horticultural Propagation Ltd. Wild collected by unknown, Cass County, Illinois. Habitat: plainfield sand on top of blue clay.
	960-2004	Plant from Wilson Nurseries, Inc. Garden collected.
	19-U	Unknown from unknown. Unknown collected.

Betula occidentalis Hook. BETULACEAE - BIRCH FAMILY
	USDA 5. WATER BIRCH

	916-80	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn S. side SD 244, 2 m. W. of Mt. Rushmore, Pennington County, South Dakota.
	917-80	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn Tensleep Canyon Creek, Washakie County, Wyoming. Habitat: Along creek.
	918-80	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn Shoshone Nat. Forest, 4 m. W. of Wapiti, along US 16, Park County, Wyoming. Habitat: S. bank of Shoshone R..

Betula papyrifera Marshall BETULACEAE - BIRCH FAMILY
	USDA 4. PAPER BIRCH

	25-64	Seed from Dominion Arboretum. Wild collected at Lac Philippe, Gatineau Park, Gatineau County, Quebec Province, Canada.
	803-65	Plant from Evergreen Nursery Co., Inc. From plant of known wild origin collected near Sturgeon Bay, Door County, Wisconsin.
	512-75	Plant from Burr Oak Nursery. Garden collected.
	919-80	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along N. side US 16 Alt., 4 m. SW. of Mt. Rushmore, Pennington County, South Dakota.
	409-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn small island in the east end of Waubee Lake, Oconto County, Wisconsin.
	228-91	Seed from The Morton Arboretum. Wild collected by Peter van der Linden & Ed Hedborn Nature Conservancy Niobrara Valley Preserve, 17 mi. north of Johnstown, south of Niobrara R., 1.5 mi. w. of bridge, Brown County, Nebraska. Habitat: base of n-facing bluff near seep.
	230-91	Seed from The Morton Arboretum. Wild collected by Peter J. van der Linden lower Fairfield Creek canyon, 17 mi. n. of Johnstown, 2 mi. west of Niobrara R. bridge, Beryl Kuhre property, Brown County, Nebraska. Habitat: seep on eroded north facing slope of U-shaped canyon.
	240-95	Seed from Morton Arb. 1995 Iowa Seed Expedition. Wild collected by unknown along access road to Mann Wilderness Area, Hardin County, Iowa. Habitat: disturbed oak-hickory upland woods.

Betula platyphylla Sukaczev BETULACEAE - BIRCH FAMILY
	USDA 5. ASIAN WHITE BIRCH

	74-80	Seed from Botanical Garden of the Yakutsk Branch of the Siberian Section of the Academy of Sciences of the U.S.S.R. Wild collected in central section, Yakut A.S.S.R., Russian S.F.S.R., U.S.S.R.
	29-84	Seed from Minnesota Landscape Arboretum. Wild collected Lesser Xingan Mts., China (Zhonghua).
	387-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Mu Chang (Big Trunk Field), Baihua Shan Forest Preserve, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: north facing slope overstory tree in seasonally moist soil.
	578-2000	Seed from Morris Arboretum of the University of Pennsylvania. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition, Changbai County, Jilin Province, China (Zhonghua). Habitat: disturbed upland forest on 5% n. slope.
	187-2002	Seed from Sakhalin Botanical Garden Russian Academy of Sciences Far East Branch. Wild collected by unknown near Yuzhno-Sakhalinsk, Rossiya (Russia) Republic, Russia.

Betula platyphylla var. japonica (Miq.) Hara BETULACEAE - BIRCH FAMILY
	USDA 4. JAPANESE WHITE BIRCH

	128-2000	Seed from Chollipo Arboretum. Wild collected at Mt. Ungbong, Togye-Up, Kangwon-do Province, Republic of Korea.
	20-2001	Seed from Chollipo Arboretum. Wild collected on Mt. Ungbong, Togye-Up, Kangwon-do Province, Republic of Korea.
	185-2002	Seed from Sakhalin Botanical Garden Russian Academy of Sciences Far East Branch. Wild collected by unknown, Hokkaido Prefecture, Hokkaido Region, Japan.

Betula populifolia Marshall BETULACEAE - BIRCH FAMILY
	USDA 3. GRAY BIRCH

	3112-22	Seed from Arnold Arboretum of Harvard University. Garden collected by Ernest H. Wilson, Arnold Arboretum of Harvard University.
	714-43	Seed from The Morton Arboretum. Garden collected.
	133-83	Seed from Montreal Botanic Garden. Wild collected, Canada. Habitat: sandy places.
	110-99	Seed from Botanic Garden of Smith College. Wild collected at Conway, Massachusetts.
	341-99	Seed from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected, Pennsylvania.

Betula pubescens Ehrh. BETULACEAE - BIRCH FAMILY
	USDA 2. MOOR BIRCH

	410-73	Seed from Botanic Garden, Faculty of Agriculture, Hokkaido University. Garden collected.
	462-80	Seed from Institut for dendrologi og planteskoledrift Norges landbrukshogskole (pre-1986). Wild collected Kise: Stange, Norway.
	206-82	Seed from Botanical Garden, University of Helsinki. Wild collected by unknown Ruovesi, Kukonpohja, Etela-Hame Province, Finland.

Betula pumila L. BETULACEAE - BIRCH FAMILY
	USDA 2. BOG BIRCH, AMERICAN DWARF BIRCH, DWARF BIRCH, LOW BIRCH, SWAMP BIRCH

	247-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg east of Henpeck, Kane County, Illinois. Habitat: bog.
	375-83	Cutting from Staff, The Morton Arboretum. Wild collected scattered plants north of Lake Defiance in Moraine Hills State Park, Mc Henry County, Illinois. Habitat: sedge meadow.
	205-97	Plant from Kane County Forest Preserve District. Wild collected at Nelson Lake Marsh in Nelson Lake Marsh Forest Preserve, Kane County, Illinois.
	40-99	Seed from W. J. Beal Botanical Garden, Michigan State University. Wild collected by unknown at Rose Lake Fen, Clinton County, Michigan. Habitat: in prairie fen.

Betula raddeana Trautv. BETULACEAE - BIRCH FAMILY
	USDA 5. CAUCASIAN BIRCH

	139-81	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected near Karachayevsk in the northern Caucasus mountains, Karachay-Cherkessia Autonomous Region, Russian S.F.S.R., U.S.S.R. Habitat: from edges of grazed meadow.

Betula schmidtii Regel BETULACEAE - BIRCH FAMILY
	USDA 5. SCHMIDT'S BIRCH

	115-83	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Wild collected near Raeonash, Russian S.F.S.R., U.S.S.R.
	382-97	Seed from Midwest Plant Collecting Collaborative (MWPCC) 1997 Russia Far East Expedition. Wild collected, Rossiya (Russia) Republic, Russia. Habitat: on 20 degree n-facing slope; forest canopy is just touching-filtered light is reaching forest floor.
	220-98	Plant from Botanic Garden of the Chicago Horticultural Society. Wild collected by Midwest Plant Collecting Collaborative (MWPCC) 1997 Russia Far East Expedition southwest of Vladivostok, Rossiya (Russia) Republic, Russia. Habitat: 20 degree n-facing slope under closed canopy with filtered light.

Betula turkestanica Litvin. BETULACEAE - BIRCH FAMILY
	USDA 6. TURKESTAN BIRCH

	386-71	Plant from U.S.D.A., Plant Introduction Station/Garden. Garden collected.
	210-2002	Cutting from The Morton Arboretum. From plant of known wild origin collected, Uzbek A.S.S.R., U.S.S.R.

Betula utilis D.Don BETULACEAE - BIRCH FAMILY
	USDA 7. HIMALAYAN BIRCH, HIMALAYAN SILVER BIRCH, INDIAN PAPER BIRCH

	509-99	Cutting from The Morton Arboretum. Garden collected.
	11-2002	Seed from Morris Arboretum of the University of Pennsylvania. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1996 Shaanxi & Gansu Province China Expedition Nanzheng Forest Bureau, Liping Forest Station, Da Leng Ba, Hanzhong District, Shaanxi Province, China (Zhonghua). Habitat: clear cut area, steep slope.
	864-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected in Lianhua Shan National Nature Reserve, Ling Tan Shen County, Gansu Province, China (Zhonghua). Habitat: mesic mixed decid./conif. forest along road edge on 30 deg nw-slope on thin rocky soil.

Betula verrucosa Ehrh. BETULACEAE - BIRCH FAMILY
	USDA 2. EUROPEAN WHITE BIRCH

	463-80	Seed from Institut for dendrologi og planteskoledrift Norges landbrukshogskole (pre-1986). Wild collected Kise: Stange, Norway.
	138-81	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected in the northern Caucasus mountains near Karachayevsk, Karachay-Cherkessia Autonomous Region, Russian S.F.S.R., U.S.S.R. Habitat: pine-birch woodlands.

Bignonia capreolata L. BIGNONIACEAE - BIGNONIA FAMILY
	USDA 8. CROSS VINE

	514-2001	Seed from Mt. Cuba Center for the Study of Piedmont Flora. Wild collected by Rick Lewandowski and Kris Bachtell, The Morton Arboretum along the west side of Kentucky Route 27 just north of the village of Hall, Jessamine County, Kentucky. Habitat: nnw-facing 80% slope on thin loam soils with a thin layer of organic debris and leaf litter, soil from limestone.

Broussonetia papyrifera (L.) L'Her. MORACEAE - MULBERRY FAMILY
	USDA 8. PAPER-MULBERRY

	67-79	Seed from Wuhan Institute of Botany Academia Sinica. Unknown collected.

Bruckenthalia spiculifolia (Salisb.) Rchb. ERICACEAE - HEATH FAMILY
	USDA 6. SPIKE HEATH

	68-95	Seed from Gradina Botanica "Alexandru Borza", Universitatea "Babes-Bolyai" din Cluj-Napoca. Wild collected at Mt. Scarita-Belioara, Alba District, Romania.

Brunnichia cirrhosa Banks ex Gaertn. POLYGONACEAE - BUCKWHEAT FAMILY
	USDA 6. BUCKWHEAT-VINE

	379-88	Seed from The Morton Arboretum Research Program. Wild collected by Raymond F. Schulenberg near Horseshoe Lake, Alexander County, Illinois.

Buddleja alternifolia Maxim. SCROPHULARIACEAE - FIGWORT FAMILY
	USDA 6. FOUNTAIN BUTTERFLY BUSH

	330-54	Plant from Willis Nursery Co., A. Willis & Co. Garden collected.
	406-83	Cutting from The Morton Arboretum. Garden collected.
	98-95	Plant from Fertile Delta Garden Center. Garden collected.

Buddleja davidii 'Summer Beauty' SCROPHULARIACEAE - FIGWORT FAMILY
	USDA 4. SUMMER BEAUTY BUTTERFLY BUSH

	373-99	Cutting from The Morton Arboretum. Garden collected.

Bumelia lanuginosa var. oblongifolia (Nutt.) R.B.Clark SAPOTACEAE - SAPODILLA FAMILY
	USDA 6. GUM BUMELIA

	481-47	Seed from Julian Steyermark, Field Museum of Natural History. Wild collected, Shannon County, Missouri.
	470-66	Plant from J. C. McDaniels, Department of Pomology, University of Illinois at Champaign Urbana. Garden collected.

Buxus microphylla var. japonica (Muell.Arg.) Rehder & E.H.Wilson BUXACEAE - BOXWOOD FAMILY
	USDA 6. JAPANESE BOXWOOD

	316-64	Plant from U.S.D.A., Plant Introduction Station/Garden. Wild collected from Mt. Kosho in central Kyushu Island, Japan.
	866-70	Cutting from The Morton Arboretum. Garden collected from Mt. Kosha in central Kyushu Island, Japan.

Buxus microphylla 'JW Singer' BUXACEAE - BOXWOOD FAMILY
	USDA 5. JW SINGER LITTLE-LEAVED BOXWOOD, JW SINGER KOREAN BOXWOOD

	76-2006	Plant from Singer Gardens, Inc. Garden collected.

Buxus microphylla var. koreana Nakai ex E.H.Wilson BUXACEAE - BOXWOOD FAMILY
	USDA 5. KOREAN BOXWOOD

	1-28	Seed from Conyers B. Fleu, Jr., C. B. FLEU N. Garden collected.
	699-70	Plant from Charles J. Fiore Company, Inc. Garden collected.
	867-70	Cutting from The Morton Arboretum. Garden collected.
	48-77	Plant from U.S.D.A., New York Agricultural Experiment Station, Regional Plant Introdution Station. Wild collected, Republic of Korea.
	427-82	Plant from The Morton Arboretum. Unknown collected.
	150-2003	Cutting from The Holden Arboretum. Garden collected by unknown just off Rt 5, Maepo-Myon, Tanyang Gun, North Ch'ungch'ong Province, Republic of Korea. Habitat: open w-facing limestone slope.
	22-U	Unknown from unknown. Unknown collected.
	236-U	Unknown from various commercial sources. Garden collected.

Buxus 'Morris Midget' BUXACEAE - BOXWOOD FAMILY
	USDA 6. MORRIS MIDGET BOXWOOD

	425-69	Cutting from The Morton Arboretum. Garden collected.

Buxus sempervirens L. BUXACEAE - BOXWOOD FAMILY
	USDA 6. COMMON BOXWOOD

	870-70	Cutting from The Morton Arboretum. Garden collected.
	197-77	Cutting from James P. Baxter. Garden collected.

Callicarpa americana L. VERBENACEAE - VERVAIN FAMILY
	USDA 7. AMERICAN BEAUTYBERRY, BEAUTY-BERRY, FRENCH-MULBERRY

	1154-2004	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2004 Ozark Expedition. Wild collected Hwy 309 N. towards Magazine Mtn. from the south in National Forest, Yell County, Arkansas. Habitat: pine-oak forest, sandy clay soil, 5-10% ne-slope.

Callicarpa bodinieri var. giraldii (Hesse) Rehder VERBENACEAE - VERVAIN FAMILY
	USDA 6. GIRALDI'S BEAUTYBERRY

	260-2002	Seed from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. Wild collected by Tiecheng Cui, Xian Botanical Garden near Lan Hua Ping, Ningxi Forest Preserve, Ningshan County, Shaanxi Province, China (Zhonghua). Habitat: near river on 10 deg. e-facing slope.

Callicarpa japonica Thunb. VERBENACEAE - VERVAIN FAMILY
	USDA 6. JAPANESE BEAUTYBERRY

	547-45	Seed from Arnold Arboretum of Harvard University. Garden collected.
	131-46	Seed from Royal Botanic Gardens Kew. Garden collected.
	603-53	Seed from University Botanic Gardens, Cantons Park Botanic Garden (Baarn). Garden collected.
	39-55	Seed from Highland Botanical Park, County of Monroe Department of Parks. Garden collected.
	410-60	Seed from Polish Academy of Sciences Insitute of Dendrology Arboretum. Garden collected.
	39-69	Plant from U.S.D.A., Plant Introduction Station/Garden. Wild collected on Mt. Kwan Ak, An Yang, Republic of Korea.
	339-82	Cutting from The Morton Arboretum. From plant of known wild origin collected on Mt. Kwan Ak, An Yang, Republic of Korea.
	224-89	Cutting from The Morton Arboretum. From plant of known wild origin collected on Mt. Kwan Ak, An Yang, Republic of Korea.
	56-2000	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Akagi Village north of Tokyo, Seta County, Gumma-ken Prefecture, Kanto Region, Japan.
	198-2000	Seed from Botanical Garden, Tohoku University. Wild collected, Japan.
	579-2000	Seed from Morris Arboretum of the University of Pennsylvania. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1994 Wudang Shan China Expedition north of Yan Chi He, Hubei Province, China (Zhonghua). Habitat: coppiced mountain slopes.

Calycanthus fertilis Walter CALYCANTHACEAE - CALYCANTHUS FAMILY
	USDA 6. PALE CAROLINA-ALLSPICE, PALE SWEETSHRUB

	473-31	Seed from Botanischer Garten und Botanisches Museum Berlin-Dahlem. Garden collected.
	184-82	Cutting from The Morton Arboretum. Garden collected.
	185-82	Layer from The Morton Arboretum. Garden collected.
	196-82	Seed from Staff, The Morton Arboretum. Wild collected by Ross C. Clark top of Toxaway Falls along US 64, Transylvania County, North Carolina. Habitat: forest edge on gently sloping exposed gneiss outcrop.

Calycocarpum lyonii (Pursh) Nutt. MENISPERMACEAE - MOONSEED FAMILY
	USDA 6. CUPSEED

	156-2001	Seed from The North Carolina Arboretum The University of North Carolina. Wild collected by unknown at Caney Creek Hwy 70 bridge, Montgomery County, Alabama. Habitat: creek bank.

Caragana arborescens Lam. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 2. SIBERIAN PEA-SHRUB

	161-44	Seed from New York Botanical Garden. Garden collected.
	644-70	Graft from The Morton Arboretum. Garden collected.
	189-73	Seed from Botanischer Garten und Botanisches Museum Berlin-Dahlem. Garden collected.
	458-84	Seed from Central Siberian Botanical Garden of the Siberian Branch of the U.S.S.R. Academy of Sciences. Wild collected near Novosibirsk, Russian S.F.S.R., U.S.S.R.
	218-93	Seed from 1993 Expedition to Russia (Gorno-Altai) Chicago BG, Holden Arb, Minn. Landsc. Arb, Mo. BG, & Morton Arb. Wild collected by Peter J. van der Linden, The Morton Arboretum along a road near the base of a slope above the Sema River about 10 km. south of Cherga, Gorno-Altayskaya Autonomous Region, Russia. Habitat: in meadow and pasture.
	234-U	Unknown from unknown. Unknown collected.

Caragana brevifolia Komar. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. KASHMIR PEA-SHRUB

	733-62	Cutting from The Morton Arboretum. Garden collected.
	340-82	Cutting from The Morton Arboretum. Garden collected.

Caragana frutex (L.) K.Koch FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 2. RUSSIAN PEA-SHRUB

	239-35	Seed from Central Experimental Farm Botanical Garden and Arboretum Ottawa Research Station, Ornamentals Section. Garden collected.
	1644-35	Plant from The Morton Arboretum. Garden collected.
	1123-38	Graft from L. Spaeth. Garden collected.
	495-80	Seed from Botanical Garden of the Uzbek Academy of Sciences. Garden collected.
	243-83	Seed from Altai Botanical Garden. Wild collected Altai Mountains, U.S.S.R.

Caragana maximowicziana Komar. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 2. MAXIMOWICZ'S PEA-SHRUB

	1109-57	Cutting from The Morton Arboretum. Garden collected.
	272-84	Cutting from The Morton Arboretum. Garden collected.
	142-92	Cutting from The Morton Arboretum. Garden collected.

Caragana pygmaea (L.) DC. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 4. DWARF PEA-SHRUB

	480-39	Plant from Northwest Nursery Co. Garden collected.

Carex comosa Boott (HERBACEOUS) CYPERACEAE - SEDGE FAMILY
	USDA 4. BRISTLY SEDGE, LONG-HAIRED SEDGE

	914-2004	Plant from various commercial sources. Garden collected.

Carex lupulina Willd. (HERBACEOUS) CYPERACEAE - SEDGE FAMILY
	USDA 3. COMMON HOP SEDGE, HOP SEDGE

	917-2004	Plant from various commercial sources. Garden collected.

Carex morrowii 'Silk Tassels' (HERBACEOUS) CYPERACEAE - SEDGE FAMILY
	USDA 3. SILK TASSELS MORROW'S SEDGE

	428-99	Plant from various commercial sources. Garden collected.

Carex sprengelii Dewey ex Spreng. (HERBACEOUS) CYPERACEAE - SEDGE FAMILY
	USDA 2. LONG-BEAKED SEDGE, SPRENGEL'S SEDGE

	580-2004	Plant from various commercial sources. Garden collected.
	1387-2004	Plant from various commercial sources. Garden collected.

Carpinus coreana Nakai BETULACEAE - BIRCH FAMILY
	USDA 7. KOREAN HORNBEAM

	52-2007	Plant from The Morton Arboretum Research Program. From plant of known wild origin collected.
	228-2007	Plant from The Morton Arboretum Research Program. Garden collected.

Carpinus japonica Blume BETULACEAE - BIRCH FAMILY
	USDA 5. JAPANESE HORNBEAM

	184-2001	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Akagi Village, Seta-gun, Gumma-ken Prefecture, Kanto Region, Japan.

Carpinus orientalis Mill. BETULACEAE - BIRCH FAMILY
	USDA 6. ORIENTAL HORNBEAM

	69-2001	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 Republic of Georgia Contract Collection. Garden collected near Mangliesi, Kvemo-Kartli Region, Georgia. Habitat: mixed forest.
	133-2002	Plant from Botanic Garden of the Chicago Horticultural Society. Wild collected by Midwest Plant Collecting Collaborative (MWPCC) 2000 Republic of Georgia Expedition near Mangliesi, Kvemo-Kartli Region, Georgia. Habitat: mixed forest.

Carya ovalis (Wangenh.) Sarg. JUGLANDACEAE - WALNUT FAMILY
	USDA 6. PIGNUT HICKORY, FALSE SHAGBARK, RED HICKORY, SMALL PIGNUT

	231-41	Plant from J. F. Jones. Garden collected.

Castanea dentata (Marshall) Borkh. FAGACEAE - BEECH FAMILY
	USDA 5. AMERICAN CHESTNUT

	484-47	Seed from Beardsley Orchard. Garden collected.
	565-78	Seed from Staff, The Morton Arboretum. Garden collected by Raymond F. Schulenberg southwest corner of Mississippi Palisades State Park, near site of and old abandoned homesite, Carroll County, Illinois.
	373-2002	Seed from Arbor Lodge State Historical Park. Garden collected.
	418-2003	Seed from American Chestnut Foundation. Wild collected near Rock Springs in Excelsior Township, Sauk County, Wisconsin. Habitat: forest.

Castanea henryi (Skan) Rehder FAGACEAE - BEECH FAMILY
	USDA 6. HENRY'S CHINKAPIN

	280-95	Plant from North America-China Plant Exploration Consortium (NACPEC) 1994 Wudang Shan China Expedition. Wild collected at Wu Dong Shan, Shaanxi Province, China (Zhonghua).

Castanea mollissima Blume FAGACEAE - BEECH FAMILY
	USDA 5. CHINESE CHESTNUT

	2133-25	Plant from Arnold Arboretum of Harvard University. Wild collected by Joseph Hers from an unspecified site, China (Zhonghua).
	634-34	Seed from U.S.D.A. Wild collected near Tientsin, China (Zhonghua).
	399-43	Plant from Fairview Evergreen Nurseries, Inc. Garden collected.
	281-95	Plant from North America-China Plant Exploration Consortium (NACPEC) 1994 Wudang Shan China Expedition. Wild collected at Wudang Shan, Shaanxi Province, China (Zhonghua).
	30-U	Unknown from unknown. Unknown collected.

Catalpa bignonioides Walter BIGNONIACEAE - BIGNONIA FAMILY
	USDA 5. SOUTHERN CATALPA

	494-66	Graft from Arnold Arboretum of Harvard University. Garden collected.

Catalpa bungei C.A.Mey. BIGNONIACEAE - BIGNONIA FAMILY
	USDA 6. BUNGE'S CATALPA

	498-80	Seed from Botanical Garden of the Uzbek Academy of Sciences. Garden collected.
	13-96	Seed from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1994 Wudang Shan China Expedition at Wudang Shan, China (Zhonghua).

Catalpa x erubescens Carriere BIGNONIACEAE - BIGNONIA FAMILY
	USDA 5. HYBRID CATALPA

	372-84	Plant from Jewell Nurseries Inc. Garden collected.

Catalpa ovata G.Don BIGNONIACEAE - BIGNONIA FAMILY
	USDA 5. CHINESE CATALPA

	518-22	Plant from H. Kohankie & Son. Garden collected.
	1021-26	Graft from Arnold Arboretum of Harvard University. Garden collected.
	579-59	Graft from The Morton Arboretum. Garden collected.
	580-59	Graft from The Morton Arboretum. Garden collected.
	35-82	Plant from United States National Arboretum. Garden collected.
	99-96	Seed from Shanghai Botanic Garden. Wild collected on Mt. Mai ji, Gansu Province, China (Zhonghua). Habitat: along roadside in mountainy area.
	55-2000	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Sano City north of Tokyo, Tochigi Prefecture, Kanto Region, Japan.

Ceanothus ovatus Desf. RHAMNACEAE - BUCKTHORN FAMILY
	USDA 5. INLAND NEW JERSEY-TEA

	497-82	Seed from Stan Tyson, Horticultural Propagation Ltd. Wild collected Illinois Beach State Park, Lake County, Illinois.

Cedrus libani A.Rich. PINACEAE - PINE FAMILY
	USDA 6. CEDAR OF LEBANON

	28-95	Seed from Aytekin Ertas, Istanbul University Orman Fakultesi Silvikultur Ara Bilim Dah. Wild collected by unknown on the mid-south Anatolian coast at Anamur, Armut kiri, Icel Ili Province, Akdeniz kiyisi Region, Turkey.

Celastrus scandens L. CELASTRACEAE - STAFF TREE FAMILY
	USDA 3. AMERICAN BITTERSWEET, CLIMBING BITTERSWEET, CLIMBING ORANGE-ROOT, FALSE BITTERSWEET, FEVER-TWIG, FEVER-TWITCH, JACOB’S-LADDER, STAFF-VINE

	184-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg 4-5 mi. east of Hulett, Crook County, Wyoming.
	760-79	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn about 3 mi. southwest of Iroquois, Iroquois County, Illinois. Habitat: fence.

Celtis australis L. CANNABACEAE - HEMP FAMILY
	USDA 6. EUROPEAN HACKBERRY, EUROPEAN NETTLETREE, HONEY-BERRY, LOTETREE, MEDITERRANEAN HACKBERRY, NETTLETREE

	335-81	Seed from Botanicki vrt. Wild collected, Yugoslavia.

Celtis bungeana Blume CANNABACEAE - HEMP FAMILY
	USDA 5. MANCHURIAN HACKBERRY

	278-73	Seed from Botanical Garden of the Uzbek Academy of Sciences. Garden collected.
	417-74	Seed from Botanical Garden of the Uzbek Academy of Sciences. Garden collected.
	336-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yong Xiu Gou (Valley with Beautiful Clouds), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: in full sun.

Celtis caucasica Willd. CANNABACEAE - HEMP FAMILY
	USDA 6. CAUCASIAN HACKBERRY

	532-64	Seed from Central Republic Botanical Garden of the Ukrainian Academy of Sciences. Garden collected.

Celtis glabrata Steven ex Planch. CANNABACEAE - HEMP FAMILY
	USDA 6. WEST ASIAN HACKBERRY

	70-2001	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 Republic of Georgia Contract Collection. Wild collected at Tsavkisis tskali, Georgia. Habitat: in river gorge.
	132-2002	Plant from Botanic Garden of the Chicago Horticultural Society. Wild collected by Midwest Plant Collecting Collaborative (MWPCC) 2000 Republic of Georgia Contract Collection Tskhneti River Gorge, Tsavkisis Tskali, Tbilisi Region, Georgia. Habitat: light forest.

Celtis koraiensis Nakai CANNABACEAE - HEMP FAMILY
	USDA 5. KOREAN HACKBERRY

	264-86	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected northeastern section, China (Zhonghua). Habitat: mountains.

Celtis occidentalis L. CANNABACEAE - HEMP FAMILY
	USDA 2. HACKBERRY

	2141-22	Plant from County of Monroe Department of Parks. Wild collected by R. E. Horsey, Rochester Parks Dept..
	2139-25	Plant from Arnold Arboretum of Harvard University. Wild collected by Ernest J. Palmer, Kansas.
	550-36	Seed from Botanic Garden of Sofia University 'St. Kliment Ohridski'. Garden collected.
	472-65	Plant from Horton Nurseries, Inc. Garden collected.
	224-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg 1.5 mi. northeast of Elizabeth along the Apple River, Jo Daviess County, Illinois. Habitat: steep bluff.
	169-99	Seed from The Holden Arboretum. Wild collected by unknown on Kelleys Island, Erie County, Ohio.
	812-2004	Plant from South Branch Nurseries, Inc. Garden collected.
	1091-2004	Plant from Klehm Nursery. Garden collected.
	34-U	Unknown from unknown. Unknown collected.

Celtis reticulata Torr. CANNABACEAE - HEMP FAMILY
	USDA 6. NET-LEAVED HACKBERRY

	509-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along US 160, 7 mi west of its Jct. with 283, Meade County, Kansas. Habitat: growing in the flood plains of a small creek.
	104-84	Seed from Washington Park Arboretum University of Washington. Wild collected south of Whitebird, Idaho County, Idaho.

Celtis tenuifolia Nutt. CANNABACEAE - HEMP FAMILY
	USDA 6. DWARF HACKBERRY

	47-64	Seed from County of Monroe Department of Parks. Garden collected by Bernard Harkness near Taney, Taney County, Missouri.
	52-81	Seed from University of Guelph Arboretum. Wild collected by unknown Pinery Provincial Park, Lambton County, Ontario Province, Canada. Habitat: Top of a sand ridge.
	3-84	Seed from Rivendell Botanic Garden. Wild collected, Ozark County, Missouri.
	2-92	Seed from Tom Dilatush. Wild collected along north side of WV-55, east of Wardensville, Hardy County, West Virginia. Habitat: shale barren.
	71-93	Seed from The Morton Arboretum Research Program. Wild collected, Menard County, Illinois.
	512-2001	Seed from Mt. Cuba Center for the Study of Piedmont Flora. Wild collected by Rick Lewandowski and Kris Bachtell, The Morton Arboretum along the west side of Kentucky Route 27 just north of the village of Hall, Jessamine County, Kentucky. Habitat: n-facing 15 % slope thin soils with eroded limestone in soil matrix on top of cliffs.
	1182-2004	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2004 Ozark Expedition. Wild collected by Linda Ellis Linda Ellis homesite, Stone County, Missouri. Habitat: dolomitic glade on bedrock at or near the surface on 10-20% nw-slope.

Celtis tournefortii Lam. CANNABACEAE - HEMP FAMILY
	USDA 7. TOURNEFORT'S HACKBERRY

	418-74	Seed from Botanical Garden of the Uzbek Academy of Sciences. Garden collected.

Centaurea montana L. (HERBACEOUS) ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 3. PERENNIAL CORNFLOWER, MOUNTAIN BLUET, MOUNTAIN KNAPWEED

	281-2004	Plant from various commercial sources. Garden collected.

Cephalanthus occidentalis L. RUBIACEAE - MADDER FAMILY
	USDA 6. BUTTONBUSH

	1126-22	Plant from Bryants Nurseries. Garden collected.
	536-80	Seed from Beal-Garfield Botanic Garden, Michigan State University. Wild collected, Ingham County, Michigan. Habitat: Vernal pond.
	55-81	Seed from Stan Tyson, Horticultural Propagation Ltd. Wild collected by unknown, Schuyler County, Illinois. Habitat: Alluvial prairie, along drainage ditch.
	538-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn, Iroquois County, Illinois. Habitat: wet roadside ditch.
	291-99	Seed from Toronto Zoo. Wild collected by unknown in a quarry on Sheridan Point on Pelee Island, Essex County, Ontario Province, Canada.
	386-2000	Plant from Possibility Place Nursery, Inc. Garden collected.
	204-2004	Plant from Possibility Place Nursery, Inc. Garden collected.
	656-2004	Plant from Klyn Nurseries, Inc. Garden collected.
	898-2004	Plant from Possibility Place Nursery, Inc. Garden collected.
	1422-2004	Plant from Spence Restoration Nursery, Inc. Garden collected.
	506-2005	Plant from Charles J. Fiore Company, Inc. Garden collected.

Cephalotaxus harringtonia var. drupacea (Siebold & Zucc.) Koidz. CEPHALOTAXACEAE - PLUM YEW FAMILY
	USDA 6. JAPANESE PLUM-YEW

	591-82	Cutting from The Morton Arboretum. Garden collected.

Cephalotaxus sinensis (Rehder & E.H.Wilson) H.L.Li CEPHALOTAXACEAE - PLUM YEW FAMILY
	USDA 7. CHINESE PLUM-YEW

	592-82	Cutting from The Morton Arboretum. Garden collected.
	22-2002	Plant from Morris Arboretum of the University of Pennsylvania. From plant of known wild origin collected by North America-China Plant Exploration Consortium (NACPEC) 1995 Shaanxi China Expedition near Hua Long Shan (mountain), Baxian Forest Station, Pingli County, Ankang District, Shaanxi Province, China (Zhonghua). Habitat: base of steep s-facing hillside, 5 m. above path in part shade.
	25-2002	Plant from Morris Arboretum of the University of Pennsylvania. From plant of known wild origin collected by North America-China Plant Exploration Consortium (NACPEC) 1995 Shaanxi China Expedition near Hua Long Shan (mountain), Baxian Forest Station, Pingli County, Ankang District, Shaanxi Province, China (Zhonghua). Habitat: base of steep s-facing hillside, 5 m. above path in part shade.
	26-2002	Plant from Morris Arboretum of the University of Pennsylvania. From plant of known wild origin collected by North America-China Plant Exploration Consortium (NACPEC) 1995 Shaanxi China Expedition near Hua Long Shan (mountain), Baxian Forest Station, Pingli County, Ankang District, Shaanxi Province, China (Zhonghua). Habitat: base of steep s-facing hillside, 5 m. above path in part shade.

Cercidiphyllum japonicum 'Pendulum' CERCIDIPHYLLACEAE - KATSURA TREE FAMILY
	USDA 5. WEEPING KATSURA TREE

	72-84	Graft from Wilson Nurseries, Inc. Garden collected.

Cercis occidentalis Torr. ex Gray FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 8. WESTERN REDBUD, CALIFORNIA REDBUD

	539-2000	Seed from University of California Botanical Garden. Wild collected by unknown west of Red Bluff, Highway 36 at junction with Vestal Road, Tehama County, California. Habitat: in oak/foothill pine woodland.
	72-2003	Seed from Washington Park Arboretum University of Washington. Wild collected by unknown in Preacher Meadow, 3 mi sw of Trinity Center, Trinity Nat. Forest, Trinity County, California. Habitat: clearings and edges of mixed conifer parkland.

Cercocarpus montanus Raf. ROSACEAE - ROSE FAMILY
	USDA 6. BIRCH-LEAVED MOUNTAIN-MAHOGANY

	452-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along WY 270, 5.1 mi. north of Guernsey, Platte County, Wyoming. Habitat: Steep, rocky hillsides.

Chaenomeles japonica (Thunb.) Lindl. ROSACEAE - ROSE FAMILY
	USDA 5. JAPANESE FLOWERING QUINCE

	274-84	Cutting from The Morton Arboretum. Garden collected.

Chaenomeles sinensis (Dum.Cours.) C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 6. CHINESE FLOWERING QUINCE

	397-65	Seed from Aritaki Arboretum. Garden collected.
	585-78	Seed from Morris Arboretum of the University of Pennsylvania. Garden collected.

Chamaecyparis thyoides (L.) "Britton, Sterns & Poggenb." CUPRESSACEAE - CYPRESS FAMILY
	USDA 3. ATLANTIC WHITE-CEDAR

	1291-22	Plant from L. E. Williams Nursery Co. Garden collected.
	382-29	Plant from Isaac Langley Williams. Garden collected.
	483-80	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected New Jersey Pine Barrens, along Rte. 539, Ocean County, New Jersey. Habitat: Bog.
	189-90	Plant from Tom Dilatush. Wild collected near North Appleton, Appleton County, Maine.

Chamaedaphne calyculata (L.) Moench ERICACEAE - HEATH FAMILY
	USDA 2. LEATHERLEAF

	3-2000	Seed from W. J. Beal Botanical Garden, Michigan State University. Wild collected in Rose Lake Bog, Clinton County, Michigan. Habitat: bog.

Chionanthus retusus Lindl. & Paxton OLEACEAE - OLIVE FAMILY
	USDA 6. CHINESE FRINGE TREE

	90-82	Seed from Staff, The Morton Arboretum. Garden collected.
	428-96	Plant from Fertile Delta Garden Center. Garden collected.
	327-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Wild collected Ling Kong Shan Zhen, Qinyan County, Shanxi Province, China (Zhonghua). Habitat: on mtn. top cut oak-pine mesic forest in rocky clay (loess) soil.

Chionanthus virginicus L. OLEACEAE - OLIVE FAMILY
	USDA 3. FRINGE TREE, WHITE FRINGE TREE, OLD MAN'S BEARD, POISON-ASH

	896-26	Plant from County of Monroe Department of Parks. Garden collected.
	1025-35	Plant from Cole Nursery Co. Garden collected.
	549-42	Plant from H. Kohankie & Son. Garden collected.
	110-46	Seed from Central Experimental Farm Botanical Garden and Arboretum Ottawa Research Station, Ornamentals Section. Garden collected.
	592-71	Plant from unknown. Garden collected.
	338-84	Plant from Matt Tures Sons Nursery. Garden collected.
	470-85	Plant from Matt Tures Sons Nursery. Garden collected.
	144-87	Plant from Matt Tures Sons Nursery. Garden collected.
	108-93	Seed from Morris Arboretum of the University of Pennsylvania. Wild collected at Chrome Serpentine Barrens, Piedmont Province, Chester County, Pennsylvania. Habitat: in woodland, seasonally dry soil.
	210-95	Plant from Klehm Nursery. Garden collected.
	5-99	Seed from Mount Holyoke College Botanic Garden, Dept. of Buildings and Grounds, Mount Holyoke College. Wild collected by Thomas E. Clark, Mount Holyoke College Botanic Garden, Dept. of Buildings and Grounds, Mount Holyoke College in George Washington National Forest, Virginia.

Chosenia arbutifolia (Pall.) A.K.Skvortsov SALICACEAE - WILLOW FAMILY
	USDA 6. CHOSENIA

	371-2000	Plant from Arnold Arboretum of Harvard University. Wild collected along the Azusa River, Nagano-ken Prefecture, Chubu Region, Japan. Habitat: river floodplain.

Cimicifuga dahurica (Turcz. ex Fisch. & C.A.Mey.) Maxim. (HERBACEOUS) RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5. DAHURIAN BUGBANE

	23-2001	Seed from Chollipo Arboretum. Wild collected on Mt. Taebaek, Taebaek-Shi, Kangwon-do Province, Republic of Korea.

Cimicifuga ramosa Nakai (HERBACEOUS) RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 9. FALL BUGBANE, BLACK COHOSH

	361-99	Seed from Botanischer Garten der Johann Wolfgang Goethe-Universitat. Garden collected.

Clematis albicoma Wherry RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5. WHITE-HAIRED LEATHER FLOWER

	636-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected in George Washington National Forest, Botetourt County, Virginia. Habitat: shale barrens.

Clematis alpina (L.) Mill. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5. ALPINE CLEMATIS

	157-83	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected, Graubunden (Grisons) Canton, Switzerland.

Clematis apiifolia DC. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 7. OCTOBER CLEMATIS

	552-78	Plant from Arnold Arboretum of Harvard University. Wild collected by unknown, Japan.
	78-81	Seed from Shanghai Botanic Garden. Wild collected Huanshan Mountain, Anhui Province, China (Zhonghua).

Clematis brevicaudata DC. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5. SHORT-PLUMED CLEMATIS, SHORTPLUME CLEMATIS

	156-81	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected around Peking, China (Zhonghua).

Clematis flammula L. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 7. FRAGRANT CLEMATIS

	231-88	Seed from Servei Municipal de Pares i Jardins. Wild collected, Spain.

Clematis fusca Turcz. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5. STANAVOI'S CLEMATIS

	376-97	Seed from Midwest Plant Collecting Collaborative (MWPCC) 1997 Russia Far East Expedition. Wild collected, Rossiya (Russia) Republic, Russia. Habitat: on 10 degree w-facing slope in broad-leaved valley forest, includes dry stream bed evident in drought year.

Clematis heracleifolia DC. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5. TUBE CLEMATIS

	214-78	Seed from Botanischer Garten der Johann Wolfgang Goethe-Universitat. Garden collected.
	215-78	Seed from Botanischer Garten der Johann Wolfgang Goethe-Universitat. Garden collected.
	595-80	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected Peking, China (Zhonghua).

Clematis integrifolia L. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 6. SOLITARY CLEMATIS

	79-78	Seed from Botanischer Garten. Garden collected.
	88-95	Plant from The Morton Arboretum. Garden collected.

Clematis x jouiniana C.K.Schneid. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5.

	123-87	Plant from T & Z Nursery. Garden collected.

Clematis koreana Kom. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5. KOREAN CLEMATIS

	43-91	Plant from Botanic Garden of the Chicago Horticultural Society. Wild collected by unknown from the top of Odae San, Piron Bong, Kangwon-do Province, Republic of Korea.
	21-93	Seed from Göteborg Botanical Garden. Wild collected by M. & U. Holmberg & Strindberg, Goteborg Botanical Garden on Mt. Halla on Cheju Island, Cheju-do Province, Republic of Korea. Habitat: mountains.

Clematis ligusticifolia Nutt. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 6. WESTERN VIRGIN'S BOWER, WESTERN WHITE CLEMATIS

	172-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg 1.5 miles east of Wyoming state line, Custer County, South Dakota.

Clematis mandshurica Rupr. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 7. MANCHURIAN CLEMATIS

	317-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: roadside edge.

Clematis 'Markham's Pink' RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5. MARKHAM'S PINK CLEMATIS

	132-2005	Plant from The Morton Arboretum Plant Sale. Garden collected.

Clematis nannophylla Maxim. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 7. LITTLE-LEAVED CLEMATIS

	82-2003	Seed from Shanghai Botanic Garden. Wild collected by unknown on Mt. Maiji, Gansu Province, China (Zhonghua). Habitat: on mountain slope/hill in mountain area.

Clematis occidentalis (Hornem.) DC. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 6. BLUE CLEMATIS, MOUNTAIN CLEMATIS, WESTERN BLUE VIRGIN'S BOWER

	114-82	Seed from University of Guelph Arboretum. Wild collected, Thunderbay District, Ontario Province, Canada. Habitat: top of ridge.

Clematis pitcheri Torr. & Gray RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 7. LEATHER FLOWER, BLUEBILL

	207-84	Plant from Rivendell Botanic Garden. Wild collected, Cass County, Illinois. Habitat: Sand prairie edge.

Clematis recta L. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 7. GROUND CLEMATIS, GROUND VIRGIN'S BOWER

	147-78	Seed from Botanischer Garten der Technischen Universitat Dresden. Garden collected.
	688-79	Seed from Hortus Botanicus 'Soroksarensis' Universitatis Hortuculturae Alimentario-Technieaque. Wild collected Csakvar, Hungary. Habitat: solo calcareo.

Clematis serratifolia Rehder RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 6. HERMITGOLD CLEMATIS

	563-79	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Unknown collected.
	418-83	Seed from Botanical Garden of the Latvian State University. Wild collected at Kamenushka in the Ussuri region, Russian S.F.S.R., U.S.S.R.

Clematis songarica Bunge RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 6. DZUNGARIAN CLEMATIS

	604-80	Seed from Main Botanical Garden. Wild collected Tadjikistan, Kirgizia, U.S.S.R.

Clematis terniflora DC. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 6. SWEET AUTUMN CLEMATIS, SWEET AUTUMN VIRGIN'S BOWER

	567-84	Plant from T & Z Nursery. Garden collected.
	22-93	Seed from Göteborg Botanical Garden. Wild collected by M. & U. Holmberg & Strindberg, Goteborg Botanical Garden between Kur-am and Taeha-dong on Ullung Island, Republic of Korea.
	131-95	Plant from T & Z Nursery. Garden collected.
	643-2005	Plant from Elite Growers, Inc. Garden collected.

Clematis virginiana L. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 6. VIRGIN'S BOWER

	217-77	Plant from The Morton Arboretum. Unknown collected.
	241-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg west of Milbrook along the Fox River, Kendall County, Illinois. Habitat: river bank.
	2-88	Seed from Staff, The Morton Arboretum. Wild collected by Ross C. Clark 5 mi. east of Stuart, Patrick County, Virginia. Habitat: Low, cut-over, disturbed ground, along Peters Cr..

Clematis vitalba L. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5. TRAVELER'S JOY, OLD MAN'S BEARD

	95-78	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected near Geneve, Geneve Canton, Switzerland.
	253-78	Seed from Botanical Garden of the Moscow Lomonosov State University. Wild collected in the Caucasus Mountains, U.S.S.R.

Clematoclethra hemsleyi Baill. ACTINIDIACEAE - ACTINIDIA FAMILY
	USDA 7. HEMSLEY'S VINE-CLETHRA

	550-96	Seed from North America-China Plant Exploration Consortium (NACPEC) 1996 Shaanxi & Gansu Province China Expedition. Wild collected in Ningxi Forest Bureau, Caiziping Forest Station, Xi Gou, Ningshan District, Shaanxi Province, China (Zhonghua). Habitat: on a dry, west facing 60% slope in part to full sum.

Clethra acuminata Michx. CLETHRACEAE - SUMMERSWEET FAMILY
	USDA 6. CINNAMON CLETHRA

	6-99	Seed from Mount Holyoke College Botanic Garden, Dept. of Buildings and Grounds, Mount Holyoke College. Wild collected by Thomas E. Clark, Mount Holyoke College Botanic Garden, Dept. of Buildings and Grounds, Mount Holyoke College in Pisgah National Forest, North Carolina.
	71-2000	Seed from The Holden Arboretum. Wild collected by Coggeshall, Yates & Tubesing, Bernheim & Holden Arboreta 1999 Kentucky trip along KY Rte 11, west of the west entrance to the Nada Tunnel, Powell County, Kentucky. Habitat: in ravine in forest understory.
	709-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected in Smoky Mountains National Park south of road to Cade's Cove, Sevier County, Tennessee. Habitat: 30-45 deg. w-facing shaded slope, fine silty loam.

Clethra alnifolia L. CLETHRACEAE - SUMMERSWEET FAMILY
	USDA 3. SUMMERSWEET CLETHRA, PEPPERBUSH, COASTAL SWEETPEPPERBUSH

	209-44	Plant from Charles J. Fiore Company, Inc. Garden collected.
	44-79	Seed from Morris Arboretum of the University of Pennsylvania. Wild collected New Lisbon, Burlington County, New Jersey. Habitat: acid woods in pine barren.
	21-81	Seed from Morris Arboretum of the University of Pennsylvania. Wild collected, Burlington County, New Jersey. Habitat: Moist, low roadside wood's edge.
	340-84	Plant from Matt Tures Sons Nursery. Garden collected.
	77-99	Seed from United States National Arboretum. Wild collected in Adkins Arboretum, Carolina County, Maryland.
	724-2004	Plant from Midwest Groundcovers. Garden collected.

Clethra barbinervis Siebold & Zucc. CLETHRACEAE - SUMMERSWEET FAMILY
	USDA 6. JAPANESE SUMMERSWEET

	330-79	Plant from United States National Arboretum. Wild collected by John L. Creech, United States National Arboretum above Rakko Falls near Nikko, Tochigi Prefecture, Kanto Region, Japan.

Cocculus carolinus (L.) DC. MENISPERMACEAE - MOONSEED FAMILY
	USDA 7. SNAILSEED, CAROLINA CORALBEAD

	210-81	Seed from The Morton Arboretum Research Program. Wild collected, Stone County, Arkansas.
	519-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn Ozark Nat. Scenic Riverways,just west of Albey Springs, Shannon County, Missouri. Habitat: along the Jacks Fork River.
	381-88	Seed from The Morton Arboretum Research Program. Wild collected by Raymond F. Schulenberg, Barry County, Missouri.
	1144-2004	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2004 Ozark Expedition. Wild collected Roaring River State Park under powerline near parking lot, Barry County, Missouri. Habitat: rocky roadside on 0-5% s-slope Roaring River State Park under powerline near parking lot.

Cocculus trilobus (Thunb.) DC. MENISPERMACEAE - MOONSEED FAMILY
	USDA 7. JAPANESE SNAILSEED, QUEEN CORALBEAD

	86-75	Plant from United States National Arboretum. From plant of known wild origin collected by Dorsett & Morse, U.S.D.A. Chiaki Park, Akita, Akita Prefecture, Tohoku-chiho Region, Japan.
	234-90	Cutting from The Morton Arboretum. From plant of known wild origin collected by Dorsett & Morse Chiaki Park, Akita, Akita Prefecture, Tohoku-chiho Region, Japan.

Colutea arborescens L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. BLADDER-SENNA

	231-78	Seed from Botanischer Garten der Johann Wolfgang Goethe-Universitat. Wild collected near Lake Garda, Lombardy Region, Italy.
	491-84	Seed from Botanic Garden of Sofia University 'St. Kliment Ohridski'. Wild collected diverse regions, Bulgaria.

Comptonia peregrina (L.) Coult. MYRICACEAE - BAYBERRY FAMILY
	USDA 2. SWEET-FERN

	344-48	Stolon from The Morton Arboretum. Garden collected.
	186-76	Root Cutting from The Morton Arboretum. Garden collected.
	216-97	Plant from Lakeland Nursery. Garden collected.
	97-2006	Division from The Morton Arboretum. Garden collected.

Coriaria japonica Gray CORIARIACEAE - CORIARIA FAMILY
	USDA 7. JAPANESE CORIARIA

	222-83	Seed from Aritaki Arboretum. Wild collected Oshimo-Mura near Mt. Fuji, Yamanashi-ken Prefecture, Chubu Region, Japan.
	388-83	Cutting from Staff, The Morton Arboretum. Garden collected.

Cornus alba L. CORNACEAE - DOGWOOD FAMILY
	USDA 2. SIBERIAN DOGWOOD

	105-79	Seed from Botanischer Garten der Friedrich-Schiller-Universitat. Wild collected near Kranichfeld, Erfurt District, German Democratic Republic.
	773-80	Cutting from The Morton Arboretum. Garden collected.
	305-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. Wild collected, Changbai County, Jilin Province, China (Zhonghua). Habitat: along moist stream edge.

Cornus alternifolia L.f. CORNACEAE - DOGWOOD FAMILY
	USDA 3. ALTERNATE-LEAVED DOGWOOD, PAGODA DOGWOOD

	195-38	Plant from Bryants Nurseries. Garden collected.
	241-44	Plant from Thomas B. Meehan Co. Garden collected.
	646-46	Seed from The Morton Arboretum. Garden collected.
	576-71	Plant from The Morton Arboretum. Garden collected.
	527-75	Plant from Esther & Herb Hahn. Garden collected.
	231-86	Cutting from The Morton Arboretum. Garden collected.
	260-97	Plant from Chicagoland Grows. Garden collected.
	111-99	Seed from Botanic Garden of Smith College. Wild collected at Whately, Massachusetts.
	662-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected along Blue Ridge Parkway pullover next to road, Haywood County, North Carolina. Habitat: 30 deg e-facing slope in full sun, gritty loam, schist derived, very well-drained, good organic layer.
	295-2002	Seed from Dayle Saar, The Morton Arboretum. Wild collected along access road that intersects High Falls Road just e. of Medicine Brook that leads to fly fishing area on the Peshtigo River, ca. 7.5 mi. nw. of the town of Crivitz, Marinette County, Wisconsin. Habitat: roadside in mixed coniferous-deciduous mesic forest.
	282-2003	Plant from Beaver Creek Nursery, Inc. Garden collected.
	669-2004	Plant from Beeson's McHenry County Nursery, Inc. Garden collected.
	821-2004	Plant from Stonegate Farm Nursery & Landscaping, Inc. Garden collected.
	1021-2004	Plant from Goodmark Nurseries, LLC. Garden collected.
	165-2006	Plant from The Morton Arboretum Plant Sale. Garden collected.
	192-U	Unknown from unknown. Unknown collected.

Cornus amomum Mill. CORNACEAE - DOGWOOD FAMILY
	USDA 5. SILKY DOGWOOD

	288-22	Cutting from Arnold Arboretum of Harvard University. Garden collected.
	1128-22	Plant from Bryants Nurseries. Garden collected.
	972-25	Seed from Botanischer Garten der Technischen Hochscheule. Garden collected.
	371-70	Cutting from The Morton Arboretum. Garden collected.
	34-98	Seed from Botanic Garden of Smith College. Wild collected near Whately and Conway, Franklin County, Massachusetts.
	4-2000	Seed from W. J. Beal Botanical Garden, Michigan State University. Wild collected along Biggie Munn power line, Ingham County, Michigan. Habitat: clearing through mesic southern forest.

Cornus x arnoldiana Rehder CORNACEAE - DOGWOOD FAMILY
	USDA 4. ARNOLD DOGWOOD

	372-70	Cutting from The Morton Arboretum. Garden collected.

Cornus australis C.A.Mey. CORNACEAE - DOGWOOD FAMILY
	USDA 7. DOGWOOD

	969-25	Seed from Botanischer Garten der Technischen Hochscheule. Garden collected.
	359-82	Cutting from The Morton Arboretum. Garden collected.

Cornus bretschneideri L.Henry CORNACEAE - DOGWOOD FAMILY
	USDA 5. BRETSCHNEIDER'S DOGWOOD

	303-90	Seed from Staff, The Morton Arboretum. Wild collected near Pangquangou, Shanxi Province, China (Zhonghua). Habitat: in upland spruce-larch-poplar-birch forest.
	15-2002	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected Green Corridor, Pangquangou, Shanxi Province, China (Zhonghua). Habitat: among shrubs.
	309-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Wild collected at Xiao Wen Forest Center, Heng Jian Zhen, Jiaocheng County, Shanxi Province, China (Zhonghua). Habitat: moist woods in dense understory with thin canopy on 45 deg. n-facing slope in rich moist well-drained humus.

Cornus coreana Wangerin CORNACEAE - DOGWOOD FAMILY
	USDA 6. KOREAN DOGWOOD

	439-65	Plant from Arnold Arboretum of Harvard University. Garden collected.
	840-65	Cutting from The Morton Arboretum. Garden collected.
	235-90	Cutting from The Morton Arboretum. Garden collected.

Cornus florida L. CORNACEAE - DOGWOOD FAMILY
	USDA 5. FLOWERING DOGWOOD

	954-22	Plant from Onarga Nursery Co. Garden collected.
	76-32	Plant from Onarga Nursery Co. Garden collected.
	612-33	Plant from Onarga Nursery Co. Garden collected.
	632-34	Plant from R. M. Kellogg Co. Garden collected.
	143-40	Plant from Cole Nursery Co. Garden collected.
	321-51	Plant from Staff, The Morton Arboretum. Wild collected by Clarence E. Godshalk 3 miles west of three Rivers, St. Joseph County, Michigan.
	351-60	Plant from Kallay Brothers Company. Garden collected.
	439-71	Plant from Staff, The Morton Arboretum. Wild collected Geo. Dahl prop. W. Broadway, Three Rivers, Michigan.
	49-94	Plant from Possibility Place Nursery, Inc. From plant of known wild origin collected by Craig Johnson, The Morton Arboretum at Indiana Dunes, Porter County, Indiana.
	227-2000	Seed from Toronto Zoo. Wild collected at Skunk's Misery, Middlesex County, Ontario Province, Canada.

Cornus foemina Mill. CORNACEAE - DOGWOOD FAMILY
	USDA 6. STIFF DOGWOOD

	279-84	Cutting from The Morton Arboretum. Garden collected.

Cornus kousa (F.Buerger ex Miq.) Hance CORNACEAE - DOGWOOD FAMILY
	USDA 5. KOUSA DOGWOOD

	223-83	Seed from Aritaki Arboretum. Wild collected Oshino-Mura, near Mt. Fuji, Yamanashi-ken Prefecture, Chubu Region, Japan.
	30-84	Seed from Hangzhou Botanic Garden and Herbarium. Garden collected.
	50-86	Plant from United States National Arboretum. Wild collected by Barry Yinger near Chongsu Sa (temple), Sagiri, Hwado Myon, Kanghwa Gun, Kyonggi-do Province, Republic of Korea. Habitat: mixed deciduous forest understory along path.
	424-2004	Plant from Bernheim Arboretum and Research Forest The Isaac W. Bernheim Foundation. From plant of known wild origin collected, Korea.
	825-2004	Plant from Studebaker Nurseries, Inc. Garden collected.
	53-2005	Plant from Mariani Nursery. Garden collected.
	58-2005	Plant from Mariani Nursery. Garden collected.
	292-2006	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected Yamato-mura, Higashi-yamanashi-gun, Yamanashi Prefecture, Japan.

Cornus macrophylla Wall. CORNACEAE - DOGWOOD FAMILY
	USDA 6. LARGE-LEAVED DOGWOOD

	278-36	Seed from Botanischer Garten und Botanisches Museum Berlin-Dahlem. Garden collected.
	681-39	Cutting from The Morton Arboretum. Garden collected.
	1233-58	Cutting from The Morton Arboretum. Garden collected.
	503-2001	Seed from Shanghai Botanic Garden. Wild collected on Mt. Maiji, Gansu Province, China (Zhonghua). Habitat: mixed forest in mountain area.

Cornus obliqua Raf. CORNACEAE - DOGWOOD FAMILY
	USDA 4. BLUE-FRUITED DOGWOOD

	1314-22	Plant from Naperville Nurseries. Garden collected.
	390-70	Cutting from The Morton Arboretum. From plant of known wild origin collected by Ernest J. Palmer near Galena, Missouri.
	724-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg 3 mi. N. of Plainfield, W. side of DuPage R. at ll9th St., Will County, Illinois.
	364-2002	Plant from Possibility Place Nursery, Inc. Garden collected.

Cornus paucinervis Hance CORNACEAE - DOGWOOD FAMILY
	USDA 5. LITTLE-LEAVED DOGWOOD

	942-62	Plant from Washington Park Arboretum University of Washington. Garden collected.
	569-63	Cutting from The Morton Arboretum. Garden collected.

Cornus pumila Koehne CORNACEAE - DOGWOOD FAMILY
	USDA 5. DWARF DOGWOOD, DWARF RED-TIPPED DOGWOOD, DWARF REDTIP DOGWOOD

	643-49	Cutting from The Morton Arboretum. Garden collected.
	675-52	Cutting from The Morton Arboretum. Garden collected.
	642-54	Cutting from The Morton Arboretum. Garden collected.
	719-79	Cutting from The Morton Arboretum. Garden collected.
	242-94	Plant from Lakeland Nursery. Garden collected.
	217-97	Plant from Lakeland Nursery. Garden collected.
	515-2006	Plant from Glacier Oaks Nursery (a division of McHenry County Nursery). Garden collected.

Cornus racemosa 'Green Carpet' CORNACEAE - DOGWOOD FAMILY
	USDA 4. GREEN CARPET GRAY DOGWOOD

	181-2005	Plant from Bailey Nurseries, Inc. Garden collected.

Cornus rugosa Lam. CORNACEAE - DOGWOOD FAMILY
	USDA 5. ROUND-LEAVED DOGWOOD

	161-79	Seed from John Kolar. Wild collected, Ontonagon County, Michigan.
	142-81	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected, Morris County, New Jersey.
	190-83	Seed from University of Guelph Arboretum. Wild collected Ipperwash Military Reserve, Lambton County, Canada. Habitat: moist woods, sand.

Cornus sanguinea L. CORNACEAE - DOGWOOD FAMILY
	USDA 5. BLOOD-TWIGGED DOGWOOD

	517-80	Seed from Botanical Gardens and Arboretum, Brno University of Agriculture. Wild collected, Czechoslovakia.
	529-80	Seed from Botanischer Garten. Wild collected Kreis Muhlhausen, Reiser, Erfurt District, German Democratic Republic.
	634-80	Seed from Jardin Botanique de l'Universite Louis Pasteur de Strasbourg. Wild collected, France. Habitat: Collines calcaires sous-vosgiennes.
	196-81	Seed from Jardin Botanique de la Ville Service des Plantations. Wild collected dans la region (Nantes), Loire Province, France.

Cornus sanguinea 'Winter Flame' CORNACEAE - DOGWOOD FAMILY
	USDA 5. WINTER FLAME BLOOD-TWIGGED DOGWOOD

	777-2004	Plant from Planter's Palette. Garden collected.

Cornus sericea ssp. sericea CORNACEAE - DOGWOOD FAMILY
	USDA 2. RED-OSIER DOGWOOD, AMERICAN DOGWOOD, RED-TWIG DOGWOOD, RED-STEM DOGWOOD

	1065-59	Cutting from The Morton Arboretum. Garden collected.
	524-75	Plant from The Morton Arboretum. Unknown collected Morton Arboretum grounds, Du Page County, Illinois.
	175-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg, Lawrence County, South Dakota.
	410-79	Cutting from The Morton Arboretum. From plant of known wild origin collected by Floyd A. Swink near lake shore at Miller Beach, Lake County, Indiana.
	680-79	Cutting from The Morton Arboretum. From plant of known wild origin collected by Floyd A. Swink near lake shore at Miller Beach, Lake County, Indiana.
	64-80	Cutting from The Morton Arboretum. From plant of known wild origin collected by Floyd A. Swink near lake shore at Miller Beach, Lake County, Indiana.
	636-81	Plant from The Morton Arboretum. Unknown collected.
	464-85	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg Winthrop Harbor, North Unit, Illinois Beach State Park, Lake County, Illinois. Habitat: sandy soil.
	781-2005	Plant from Mariani Landscape/Design Build Maintenance. Garden collected.

Cornus sericea ssp. sericea 'Alleman's Dwarf' CORNACEAE - DOGWOOD FAMILY
	USDA 2. ALLEMAN'S DWARF RED-OSIER DOGWOOD

	1320-2004	Plant from Mariani Nursery. Garden collected.
	183-2005	Plant from D. Hill Nursery Co. Garden collected.

Cornus x slavinii Rehder CORNACEAE - DOGWOOD FAMILY
	USDA 4. SLAVIN'S DOGWOOD

	397-70	Cutting from The Morton Arboretum. Garden collected.

Cornus walteri Wangerin CORNACEAE - DOGWOOD FAMILY
	USDA 6. WALTER'S DOGWOOD

	475-26	Seed from Botanical Garden of the Faculty of Sciences of Charles University. From plant of known wild origin collected by Ernest H. Wilson, Arnold Arboretum of Harvard University from Hsing-shan Hsien, Changyang Hsien, Fang Hsien, and Patung Hsien, Hubei Province, China (Zhonghua). Habitat: in woodlands.
	361-82	Cutting from The Morton Arboretum. Garden collected.
	288-95	Cutting from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson from Hsing-shan Hsien, Changyang Hsien, Fang Hsien, and Patung Hsien, Hubei Province, China (Zhonghua). Habitat: in woodlands.
	342-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Wild collected Huang Sha Ling, Yang Cheng Xian, Yang Cheng County, Shanxi Province, China (Zhonghua). Habitat: agricultural areas.

Coronilla emerus L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 5. SCORPION SENNA

	481-52	Seed from Arnold Arboretum of Harvard University. Garden collected.
	669-79	Cutting from The Morton Arboretum. Garden collected.

Corylopsis veitchiana Bean HAMAMELIDACEAE - WITCH-HAZEL FAMILY
	USDA 7. VEITCH'S WINTER-HAZEL

	180-75	Seed from Hillier & Sons Nursery. Garden collected.

Corylus chinensis Franch. BETULACEAE - BIRCH FAMILY
	USDA 6. CHINESE HAZELNUT, CHINESE FILBERT, CHINESE HAZEL

	852-29	Plant from Arnold Arboretum of Harvard University. Garden collected.
	898-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected at Mo Gou Forest Area, Die Bu County, Gansu Province, China (Zhonghua). Habitat: cool moist narrow n-running valley next to cult. fields, opp. more natural forest, 15 deg e-slope, rocky silt-loam.

Corylus fargesii (Franch.) C.K.Schneid. BETULACEAE - BIRCH FAMILY
	USDA 5. FARGES' HAZELNUT

	29-98	Plant from Morris Arboretum of the University of Pennsylvania. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1996 Shaanxi & Gansu Province China Expedition at Xiao Long Shan Forest Bureau, Dang Chuan Forest Station, Mai Chao Gou, Tian Shui City District, Gansu Province, China (Zhonghua). Habitat: 2 m. above a stream in open woodland among rocks in sandy silt loam soils deposited by stream along a path..
	258-98	Plant from Longwood Gardens. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1996 Shaanxi & Gansu Province China Expedition at Xiao Long Shan Forest Bureau, Dang Chuan Forest Station, Mai Chao Gou, Tian Shui City District, Gansu Province, China (Zhonghua). Habitat: 2 m. above a stream in open woodland among rocks in sandy silt loam soils deposited by stream along a path..
	365-2005	Cutting from The Morton Arboretum. From plant of known wild origin collected by at Xiao Long Shan Forest Bureau, Dang Chuan Forest Station, Mai Chao Gou, Tian Shui City District, Gansu Province, China (Zhonghua). Habitat: 2 m. above a stream in open woodland among rocks in sandy silt loam soils deposited by stream along a path..
	889-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected at Dai Hai Gou, Zhou Qu County, Gansu Province, China (Zhonghua). Habitat: open 3-running stream next to n-running ravine in mesic decid. cut & browsed area, 45 deg n-slope, organic clay.

Corylus 'Purple Haze' BETULACEAE - BIRCH FAMILY
	USDA 5. PURPLE HAZE HAZELNUT

	64-2007	Plant from The Morton Arboretum Research Program. Garden collected.

Cotinus coggygria 'Young Lady' Patent ppaf ANACARDIACEAE - CASHEW FAMILY
	USDA 4. YOUNG LADY EURASIAN SMOKE TREE

	155-2004	Plant from Spring Meadow Nursery, Inc. Garden collected.

Cotoneaster acutifolia Turcz. ROSACEAE - ROSE FAMILY
	USDA 5. PEKING COTONEASTER

	358-31	Plant from Onarga Nursery Co. Garden collected.
	389-83	Cutting from The Morton Arboretum. Garden collected.

Cotoneaster adpressa Bois ROSACEAE - ROSE FAMILY
	USDA 5. CREEPING COTONEASTER

	871-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected in Bai Long Jiang Forest Station / Ge'er Gou, Zhou Qu Shen County, Gansu Province, China (Zhonghua). Habitat: mesic mixed decid./confr. forest in ne-facing valley with steep slopes, long, cool, ravine/gorge, thin soil bolders.

Cotoneaster adpressa var. praecox (Vilmor.) Bois & P.Berthault ROSACEAE - ROSE FAMILY
	USDA 5. EARLY COTONEASTER

	282-84	Cutting from The Morton Arboretum. Garden collected.

Cotoneaster ambigua Rehder & E.H.Wilson ROSACEAE - ROSE FAMILY
	USDA 5. COTONEASTER

	648-79	Cutting from The Morton Arboretum. From plant of known wild origin collected by Harry Smith at Drogochi, Xinjiang Uygur Zizhiqu Autonomous Region, China (Zhonghua).
	261-2002	Seed from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. Wild collected by Tiecheng Cui, Xian Botanical Garden east river, Taibaishan, Meixian County, Shaanxi Province, China (Zhonghua). Habitat: on 45 deg. n-facing slope.
	96-2003	Cutting from The Morton Arboretum. From plant of known wild origin collected by Harry Smith at Drogochi, Xinjiang Uygur Zizhiqu Autonomous Region, China (Zhonghua).
	448-2006	Cutting from The Morton Arboretum. From plant of known wild origin collected by Harry Smith at Drogochi, Xinjiang Uygur Zizhiqu Autonomous Region, China (Zhonghua).

Cotoneaster apiculata Rehder & E.H.Wilson ROSACEAE - ROSE FAMILY
	USDA 5. CRANBERRY COTONEASTER

	1360-2004	Plant from Wilson Nurseries, Inc. Garden collected.
	134-2006	Plant from Midwest Groundcovers. Garden collected.

Cotoneaster dammeri C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 5. BEARBERRY COTONEASTER

	284-84	Cutting from The Morton Arboretum. Garden collected.

Cotoneaster dielsiana Pritz. ROSACEAE - ROSE FAMILY
	USDA 5. DIELS COTONEASTER

	1078-59	Cutting from The Morton Arboretum. Garden collected.
	367-81	Cutting from The Morton Arboretum. Garden collected.

Cotoneaster divaricata Rehder & E.H.Wilson ROSACEAE - ROSE FAMILY
	USDA 5. SPREADING COTONEASTER

	238-85	Cutting from The Morton Arboretum. Garden collected.

Cotoneaster horizontalis Decne. ROSACEAE - ROSE FAMILY
	USDA 5. ROCK COTONEASTER

	692-64	Cutting from The Morton Arboretum. Garden collected.
	515-78	Cutting from The Morton Arboretum. Garden collected.
	267-98	Seed from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. Garden collected.
	892-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected, Die Bu County, Gansu Province, China (Zhonghua). Habitat: se-running stream through fairly steep ravine, mesic mixed decid./ conif. forest, 15 deg n-slope full sun thin soil.

Cotoneaster integerrima Medik. ROSACEAE - ROSE FAMILY
	USDA 6. EUROPEAN COTONEASTER

	555-79	Seed from Jardin de la Station Alpine du Lautaret (Hautes-Alpes) Laboratoire de Botanique. Wild collected by unknown dans la region du Lautaret, Grenoble cedex, Isere Department, France.
	515-80	Seed from Ringve Botaniske Hage Universitet i Trondheim Ringve Bot. Gard., Norwegian U. of Sci. & Tech., NTNU. Wild collected Oppdal, Kongsnoll, Sor-Trondelag County, Norway.
	482-83	Cutting from The Morton Arboretum. Garden collected.

Cotoneaster lucida Schltdl. ROSACEAE - ROSE FAMILY
	USDA 3. HEDGE COTONEASTER

	287-31	Plant from H. Kohankie & Son. Garden collected.
	598-59	Graft from Botanical Garden of the University of Amsterdam. Garden collected.
	700-80	Cutting from The Morton Arboretum. Garden collected.
	611-2005	Plant from Mariani Nursery. Garden collected.

Cotoneaster melanocarpa Lodd. ROSACEAE - ROSE FAMILY
	USDA 5. BLACK COTONEASTER

	483-83	Cutting from The Morton Arboretum. From plant of known wild origin collected by Karl Evert Flinck, Sweden. Habitat: at Varberg.
	220-93	Seed from 1993 Expedition to Russia (Gorno-Altai) Chicago BG, Holden Arb, Minn. Landsc. Arb, Mo. BG, & Morton Arb. Wild collected by Peter J. van der Linden, The Morton Arboretum above the Sema River about 10 km. south of Cherga, Gorno-Altayskaya Autonomous Region, Russia. Habitat: on a rock outcrop on a w-facing slope halfway up.

Cotoneaster multiflora Bunge ROSACEAE - ROSE FAMILY
	USDA 3. SHOWY COTONEASTER

	55-27	Seed from Arnold Arboretum of Harvard University. Wild collected by Joseph F. Rock, China (Zhonghua).
	147-92	Cutting from The Morton Arboretum. From plant of known wild origin collected by Joseph F. Rock, China (Zhonghua).
	106-95	Plant from Synnestvedt Nursery Co. Garden collected.
	156-95	Plant from Shemin Nurseries, Inc. Garden collected.

Cotoneaster obscura Rehder & E.H.Wilson ROSACEAE - ROSE FAMILY
	USDA 5. BLOODBERRY COTONEASTER

	352-53	Graft from Copenhagen Botanical Garden. Garden collected.

Cotoneaster racemiflora (Desf.) K.Koch ROSACEAE - ROSE FAMILY
	USDA 3. REDBEAD COTONEASTER

	546-79	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Unknown collected.

Cotoneaster salicifolia var. rugosa (Pritz.) Rehder & E.H.Wilson ROSACEAE - ROSE FAMILY
	USDA 6. WILLOW-LEAVED COTONEASTER

	1088-59	Cutting from The Morton Arboretum. Garden collected.

Cotoneaster tomentosa (Aiton) Lindl. ROSACEAE - ROSE FAMILY
	USDA 6. WOOLLY COTONEASTER

	518-79	Seed from Agrobotanic Garden of the University of Agricultural Sciences Department of Botany. Wild collected near Godollo, Pest County, Hungary.

Cotoneaster uniflora Bunge ROSACEAE - ROSE FAMILY
	USDA 5. ALTAI COTONEASTER

	459-84	Seed from Central Siberian Botanical Garden of the Siberian Branch of the U.S.S.R. Academy of Sciences. Wild collected, Russian S.F.S.R., U.S.S.R.

Cotoneaster zabelii C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 6. ZABEL'S COTONEASTER

	306-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Wild collected in Mingyi Valley, Panquangou, Heng Jian Zhen, Jiaocheng County, Shanxi Province, China (Zhonghua). Habitat: steep 45 deg w-facing rocky slope in rocky thin soils.

Crataegus arnoldiana Sarg. ROSACEAE - ROSE FAMILY
	USDA 5. ARNOLD HAWTHORN

	379-67	Plant from Skinner's Nursery, Ltd. Garden collected.

Crataegus calpodendron (Ehrh.) Medik. ROSACEAE - ROSE FAMILY
	USDA 2. PEAR HAWTHORN

	136-54	Plant from H. Kohankie & Son. Garden collected.
	259-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg McKinley Woods Forest Preserve, Will County, Illinois.

Crataegus chlorosarca Maxim. ROSACEAE - ROSE FAMILY
	USDA 5. BLACK-FRUITED HAWTHORN

	705-79	Seed from Tallinn Botanical Garden of the Estonian Academy of Sciences. Wild collected Kamchatka peninsula, Russian S.F.S.R., U.S.S.R.

Crataegus chrysocarpa Ashe ROSACEAE - ROSE FAMILY
	USDA 5. FIREBERRY HAWTHORN

	2033-23	Plant from Arnold Arboretum of Harvard University. Garden collected.

Crataegus coccinioides Ashe ROSACEAE - ROSE FAMILY
	USDA 5. KANSAS HAWTHORN

	451-29	Seed from Arnold Arboretum of Harvard University. Garden collected.
	60-83	Graft from The Morton Arboretum. Garden collected.

Crataegus conspecta Sarg. ROSACEAE - ROSE FAMILY
	USDA 5.

	61-23	Seed from Arnold Arboretum of Harvard University. Garden collected.

Crataegus crus-galli L. ROSACEAE - ROSE FAMILY
	USDA 5. COCKSPUR HAWTHORN

	11-23	Seed from Arnold Arboretum of Harvard University. Garden collected.
	27-23	Seed from Arnold Arboretum of Harvard University. Garden collected.
	1569-26	Plant from Arnold Arboretum of Harvard University. Garden collected.
	1570-26	Plant from Arnold Arboretum of Harvard University. Garden collected.
	257-36	Seed from New York Botanical Garden. Garden collected.
	579-37	Seed from Ryks Arboretum. Garden collected.
	335-42	Graft from The Morton Arboretum. Garden collected.
	361-42	Graft from The Morton Arboretum. Garden collected.
	539-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along county road to Iroquois County Conservation Area, Iroquois County, Illinois. Habitat: fencerow.
	59-87	Plant from Berthold Nursery. Garden collected.
	124-88	Plant from Tecza & Sons Nurseries, Inc. Garden collected.
	60-90	Plant from Klehm Nursery. Garden collected.

Crataegus crus-galli var. inermis Lange ROSACEAE - ROSE FAMILY
	USDA 5. THORNLESS COCKSPUR HAWTHORN

	35-52	Plant from Hermann A. Hesse Baumschulen. Garden collected.
	312-90	Plant from Neumann's Nursery. Garden collected.
	91-91	Plant from Neumann's Nursery. Garden collected.
	98-93	Plant from Neumann's Nursery. Garden collected.
	79-94	Plant from Western DuPage Landscaping. Garden collected.
	157-94	Plant from Klehm Nursery. Garden collected.
	1085-2004	Plant from King Nursery. Garden collected.
	54-2005	Plant from Mariani Nursery. Garden collected.

Crataegus douglasii Lindl. ROSACEAE - ROSE FAMILY
	USDA 5. BLACK HAWTHORN

	926-80	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn Pine Mountain, Park County, Montana. Habitat: s-facing mountain slope.

Crataegus durobrivensis Sarg. ROSACEAE - ROSE FAMILY
	USDA 5. CHRISTMAS HAWTHORN

	222-90	Bud from The Morton Arboretum. Garden collected.

Crataegus harbisonii Beadle ROSACEAE - ROSE FAMILY
	USDA 6. HARBISON'S HAWTHORN

	672-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. From plant of known wild origin collected near Nashville, Davidson County, Tennessee.

Crataegus kansuensis E.H.Wilson ROSACEAE - ROSE FAMILY
	USDA 5. GANSU HAWTHORN

	16-2002	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected Dacaoping, Pangquangou, Shanxi Province, China (Zhonghua). Habitat: mixed forest.

Crataegus x lavallei Herincq ROSACEAE - ROSE FAMILY
	USDA 5. LAVALLE'S HAWTHORN, LAVALLE HAWTHORN

	66-83	Graft from The Morton Arboretum. Garden collected.

Crataegus maximowiczii C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 5. MAXIMOWICZ'S HAWTHORN

	295-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. Wild collected near Yalu River, Changbai County, Jilin Province, China (Zhonghua). Habitat: along stream edge in mountain ravine.

Crataegus mollis (Torr. & Gray) Scheele ROSACEAE - ROSE FAMILY
	USDA 5. DOWNY HAWTHORN

	247-23	Seed from Arnold Arboretum of Harvard University. Garden collected.
	1106-60	Plant from The Morton Arboretum. Wild collected Old Johnson land area of the Morton Arboretum, Du Page County, Illinois.
	202-92	Seed from Staff, The Morton Arboretum. Wild collected by Kris Bachtell in Mc Dowell Grove Forest Preserve on the west side of the Du Page River, Du Page County, Illinois. Habitat: on disturbed floodplain.
	265-95	Seed from John E. van der Linden. Wild collected from Marble Beach area on the west side of Spirit Lake, Dickinson County, Iowa.
	292-99	Seed from Toronto Zoo. Wild collected by unknown at Sheridan Point, Pelee Island, Essex County, Ontario Province, Canada.
	388-2000	Plant from Possibility Place Nursery, Inc. Garden collected.
	355-2002	Plant from Possibility Place Nursery, Inc. Garden collected.
	336-2003	Seed from The Morton Arboretum. Wild collected by Kris Bachtell on grounds of Flossmoor Country Club, 1441 S. Western Ave., Flossmoor, Cook County, Illinois.
	51-U	Unknown from native spontaneous. Wild collected grounds of The Morton Arboretum, north of Lisle, DuPage County, Illinois.

Crataegus monogyna Jacq. ROSACEAE - ROSE FAMILY
	USDA 5. SINGLE-SEEDED HAWTHORN

	85-85	Seed from Lesny Zaklad Doswiadczalny Arboretum Szkola Glowna Gospodarstwa Wiejskiego, Ak. Rosnicza w Warszawie. Wild collected near Rogow, Poland.

Crataegus mortonis Laughlin ROSACEAE - ROSE FAMILY
	USDA 5. MORTON HAWTHORN

	52-U	native spontaneous. Wild collected northwest side of Lake Marmo, on the west side of The Morton Arboretum, ca. 1 mi. north of Lisle, DuPage County, Illinois.

Crataegus pedicellata Sarg. ROSACEAE - ROSE FAMILY
	USDA 5. SCARLET HAWTHORN

	20-23	Seed from Arnold Arboretum of Harvard University. Garden collected.
	246-23	Seed from Arnold Arboretum of Harvard University. Garden collected.

Crataegus pentagyna Waldst. & Kit. ROSACEAE - ROSE FAMILY
	USDA 6. HAWTHORN

	318-81	Seed from Gradina Botanica a Universitatii din Bucuresti. Wild collected in the Calugareni (Ilfov) region, Romania.
	604-83	Seed from Botanical Garden of Academy of Sciences of Armenian S.S.R. Wild collected, Armenian S.S.R., U.S.S.R. Habitat: "Vegetatio silvatica, silvae collucatae".

Crataegus phaenopyrum (L.f.) Medik. ROSACEAE - ROSE FAMILY
	USDA 3. WASHINGTON HAWTHORN

	205-42	Plant from Bohlender Nurseries Company. Garden collected.
	198-92	Plant from Klehm Nursery. Garden collected.
	174-94	Plant from Klehm Nursery. Garden collected.
	54-U	Unknown from unknown. Unknown collected.

Crataegus pinnatifida Bunge ROSACEAE - ROSE FAMILY
	USDA 6. CHINESE HAWTHORN

	315-82	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Wild collected near Vladivostok, Russian S.F.S.R., U.S.S.R.
	121-83	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Wild collected, Russian S.F.S.R., U.S.S.R.
	472-84	Seed from Botanical Garden of the Latvian Academy of Sciences. Wild collected Kamenushka in the Ussuri region, Russian S.F.S.R., U.S.S.R. Habitat: in sylva frondosa.

Crataegus pringlei Sarg. ROSACEAE - ROSE FAMILY
	USDA 5. PRINGLE'S HAWTHORN

	449-2006	Cutting from The Morton Arboretum. From plant of known wild origin collected.

Crataegus pruinosa (H.L.Wendl.) K.Koch ROSACEAE - ROSE FAMILY
	USDA 5. FROSTED HAWTHORN

	69-83	Graft from The Morton Arboretum. Garden collected.
	481-85	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg Forest Glen Preserve near Westville, Vermilion County, Illinois.

Crataegus succulenta Link ROSACEAE - ROSE FAMILY
	USDA 4. FLESHY HAWTHORN

	1814-24	Plant from Arnold Arboretum of Harvard University. Garden collected.
	450-86	Seed from Ken Konsis, Forest Glen County Preserve. Wild collected by unknown, Westville County, Illinois. Habitat: from trees in Beech-Maple forest.
	215-89	Graft from The Morton Arboretum. Garden collected.
	23-90	Seed from University of Guelph Arboretum. Wild collected, Middlesex County, Ontario Province, Canada.

Crataegus viridis L. ROSACEAE - ROSE FAMILY
	USDA 5. GREEN HAWTHORN

	212-81	Seed from The Morton Arboretum Research Program. Wild collected, Dunklin County, Missouri.

Crocus ancyrensis 'Golden Bunch' (HERBACEOUS) IRIDACEAE - IRIS FAMILY
	USDA 7. GOLDEN BUNCH ANKARA CROCUS

	352-2003	Plant from various commercial sources. Garden collected.

Crocus biflorus 'Miss Vain' (HERBACEOUS) IRIDACEAE - IRIS FAMILY
	USDA 4. MISS VAIN SCOTCH CROCUS, MISS VAIN TWO-FLOWERED CROCUS

	353-2003	Plant from various commercial sources. Garden collected.

Crocus chrysanthus 'Ard Schenk' (HERBACEOUS) IRIDACEAE - IRIS FAMILY
	USDA 4. ARD SCHENK GOLDEN CROCUS

	354-2003	Plant from various commercial sources. Garden collected.

Crocus sieberi 'Tricolor' (HERBACEOUS) IRIDACEAE - IRIS FAMILY
	USDA 7. TRICOLOR SIEBER'S CROCUS

	356-2003	Plant from various commercial sources. Garden collected.
	1022-2005	Plant from various commercial sources. Garden collected.

Cydonia oblonga Mill. ROSACEAE - ROSE FAMILY
	USDA 5. QUINCE

	146-59	Seed from Botanical Garden of the Academy of Sciences of Turkmen SSR. Garden collected.
	590-64	Seed from H. H. Shinnick. Garden collected.
	236-84	Cutting from The Morton Arboretum. Garden collected.
	282-86	Cutting from The Morton Arboretum. Garden collected.

Cyperus prolifer Lam. (HERBACEOUS) CYPERACEAE - SEDGE FAMILY
	USDA 7 - 11. DWARF PAPYRUS, MINIATURE PAPYRUS

	345-2006	Plant from various commercial sources. Garden collected.

Cytisus austriacus L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 5. AUSTRIAN BROOM

	72-89	Seed from Agrobotanic Garden of the University of Agricultural Sciences Department of Botany. Wild collected, Hungary.

Cytisus decumbens (Durande) Spach FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. PROSTRATE BROOM

	179-85	Seed from Jardin Botanique de l`Universite et de la Ville. Wild collected Courvieres, Doubs Department, France.

Cytisus hirsutus L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. HAIRY BROOM

	363-82	Cutting from The Morton Arboretum. Garden collected.

Cytisus scoparius (L.) Link FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. SCOTS BROOM

	291-94	Seed from Conservatoire et Jardins Botaniques de Nancy. Wild collected at la Combe, Le Valtin, Vosges Department, France.
	81-95	Seed from Botanischer Garten, Section Biowissenschaften, Martin-Luther-Universitat Halle-Wittenberg. Wild collected at Eibenstock, Saxony State, Federal Republic of Germany.

Cytisus sessilifolius L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 7. SESSILE-LEAVED BROOM

	374-2001	Seed from Ministere de l'Agriculture de la Peche E.N.G.R.E.F. Arboretum National des Barres. Wild collected by unknown, Isere Department, France.

Cytisus supinus L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 7. CLUSTERED BROOM

	521-79	Seed from Agrobotanic Garden of the University of Agricultural Sciences Department of Botany. Wild collected near Godollo, Pest County, Hungary.
	358-81	Cutting from The Morton Arboretum. From plant of known wild origin collected near Godollo, Pest County, Hungary.

Daphne alpina L. THYMELAEACEAE - MEZEREUM FAMILY
	USDA 5. ALPINE DAPHNE

	670-79	Cutting from The Morton Arboretum. Garden collected.
	252-99	Seed from Jardin Botanique de l`Universite et de la Ville. From plant of known wild origin collected by unknown in Franche-Comte region near Besancon, France.

Daphne giraldii Nitsche THYMELAEACEAE - MEZEREUM FAMILY
	USDA 6. GIRALDI'S DAPHNE

	309-90	Seed from Staff, The Morton Arboretum. Wild collected near Pangquangou, Shanxi Province, China (Zhonghua). Habitat: in brown silty soil along a rocky bank.

Decumaria barbara L. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 7. WOOD VAMP, CLIMBING-HYDRANGEA

	695-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected along Mill Creek Road, Chattahooche National Forest, Murray County, Georgia. Habitat: 60-90 deg. se-facing slope with 1/2day sun.

Deutzia glabrata Komar. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 6. DEUTZIA

	180-90	Seed from Botanic Garden of the Chicago Horticultural Society. Wild collected by Holden Arboretum along a forestry road near Kariwang San, Kangwon-do Province, Republic of Korea. Habitat: Quercus-Acer-Sorbus forest.
	39-95	Seed from Botanical Garden, University of Helsinki. Wild collected by unknown in Mt. Changbai area, Hong shi forest area, 40 km. east of Changbai Mountain Research Station (& Erdaobeihe town), Antu County, Jilin Province, China (Zhonghua). Habitat: primeval temperate orohemiboreal Abies nephrolepis, Acer, Pinus Koraiensis, Populus, Tilia forest at sm. rivulet.

Deutzia gracilis Siebold & Zucc. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 5. SLENDER DEUTZIA

	370-81	Cutting from The Morton Arboretum. Garden collected.
	596-2004	Plant from Hopewell Nursery, Inc. Garden collected.

Deutzia grandiflora Bunge HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 6. EARLY DEUTZIA

	596-80	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected Peking, China (Zhonghua).
	318-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yong Xiu Gou (Valley with Beautiful Clouds), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: s-sw steep embankment just above the stream among rocks.
	362-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Zhaung Ke (Old Village), Song Shan Forest Preserve, Yanqing County, Beijing Shi Municipality, China (Zhonghua). Habitat: nw facing slope in understory along path edge.

Deutzia x lemoinei 'Compacta' HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 4. COMPACT LEMOINE'S DEUTZIA, DWARF LEMOINE'S DEUTZIA

	863-65	Cutting from The Morton Arboretum. Garden collected.
	642-2004	Plant from Klehm Nursery. Garden collected.

Deutzia ningpoensis Rehder HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 6. NINGPO DEUTZIA

	325-85	Cutting from The Morton Arboretum. Garden collected.

Deutzia parviflora Bunge HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 5. MONGOLIAN DEUTZIA

	373-81	Cutting from The Morton Arboretum. Garden collected.
	316-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected near Wuling Shan Village, Hebei Province, China (Zhonghua). Habitat: growing along road.
	333-2000	Plant from The Morton Arboretum Research Program. Wild collected by at Kaimanovka village, Rossiya (Russia) Republic, Russia. Habitat: mixed deciduous-evergreen forest.

Deutzia scabra Maxim. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 6. ROUGH-LEAVED DEUTZIA

	291-84	Cutting from The Morton Arboretum. Garden collected.
	15-97	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Kuma Town, Kamiukena-gun, west of Tokyo, Ehime Prefecture, Shikoku-chiho Region, Japan.

Deutzia schneideriana Rehder HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 6. SCHNEIDER'S DEUTZIA

	409-84	Cutting from The Morton Arboretum. From plant of known wild origin collected by A. N. Steward Lushan, Kiangxi Province, China (Zhonghua).

Deutzia sieboldiana Maxim. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 6. SIEBOLD'S DEUTZIA

	61-81	Plant from United States National Arboretum. Wild collected on Tatsura Mt. on Tsushima Island, Nagasaki Prefecture, Kyushu-chiho Region, Japan.

Diervilla rivularis Gatt. DIERVILLACEAE - BUSH-HONEYSUCKLE FAMILY
	USDA 5. GEORGIA BUSH-HONEYSUCKLE

	114-91	Plant from Arnold Arboretum of Harvard University. Garden collected by R. Nicholson, Arnold Arboretum of Harvard University near parking lot for Cloudland Canyon State Park, Dade County, Georgia. Habitat: full sun, pine woods margin, cliff face.

Diervilla sessilifolia Buckley DIERVILLACEAE - BUSH-HONEYSUCKLE FAMILY
	USDA 5. SOUTHERN BUSH-HONEYSUCKLE

	294-84	Cutting from The Morton Arboretum. From plant of known wild origin collected along the Appalachian Mts. Trail to Craggy Dome off of the Blue Ridge Parkway, North Carolina. Habitat: exposed bald.

Diospyros virginiana L. EBENACEAE - EBONY FAMILY
	USDA 5. PERSIMMON

	2907-22	Seed from Arnold Arboretum of Harvard University. Garden collected.
	1835-23	Seed from Benjamin Franklin Bush. Wild collected near Leenwood, Missouri.
	727-43	Seed from The Morton Arboretum. Garden collected.
	15-69	Plant from The Morton Arboretum. Garden collected.
	212-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg 5 miles west of Manito, Tazewell County, Illinois. Habitat: Degraded sandy savannah.
	216-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg 2 miles west of Marblehead along the Mississippi River, Adams County, Illinois. Habitat: floodplain.
	231-85	Plant from Possibility Place Nursery, Inc. Garden collected.
	227-94	Plant from Western DuPage Landscaping. Garden collected.
	272-95	Seed from The Morton Arboretum. From plant of known wild origin collected by Benjamin Franklin Bush near Leenwood, Missouri.
	535-96	Seed from Staff, The Morton Arboretum. Wild collected by Peter J. van der Linden in picnic area of Big Oak Tree State Park, Mississippi County, Missouri. Habitat: bottomland forest.
	1430-2004	Plant from Heritage Seedlings, Inc. Garden collected.
	544-2005	Plant from Deeter Nurseries, Inc. Garden collected.
	58-U	Unknown from unknown. Unknown collected.

Dipelta floribunda Maxim. LINNAEACEAE - TWINFLOWER FAMILY
	USDA 6. CHINESE BUSH-HONEYSUCKLE

	297-88	Cutting from The Morton Arboretum. Garden collected.

Diphylleia cymosa Michx. (HERBACEOUS) BERBERIDACEAE - BARBERRY FAMILY
	USDA 7. AMERICAN UMBRELLALEAF

	649-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected along NC state highway 215 in Pisgah National Forest, Haywood County, North Carolina. Habitat: 45-60 deg e-facing mesic mtn. slope in gritty loam over rock, sharply drained, thick organic/moss layer over rock.

Dorycnium suffruticosum Vill. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 8. CANARY-CLOVER

	184-78	Seed from Botanischer Garten und Botanisches Museum Berlin-Dahlem. Garden collected.

Dryopteris affinis (Lowe) Fraser-Jenk. (HERBACEOUS) DRYOPTERIDACEAE - WOOD FERN FAMILY
	USDA 6. GOLDEN-SCALE MALE FERN

	162-2000	Plant from various commercial sources. Garden collected.
	234-2003	Plant from various commercial sources. Garden collected.
	805-2004	Plant from various commercial sources. Garden collected.

Dryopteris crassirhizoma Nakai (HERBACEOUS) DRYOPTERIDACEAE - WOOD FERN FAMILY
	USDA 6. THICK-ROOTED WOOD FERN, THICKROOT WOOD FERN

	159-2005	Plant from various commercial sources. Garden collected.

Echinacea 'Art's Pride' Patent 15090 (HERBACEOUS) ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 5. ORANGE MEADOWBRITEÔ

	264-2003	Plant from various commercial sources. Garden collected.

Echinacea pallida (Nutt.) Nutt. (HERBACEOUS) ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 5. PALE PURPLE CONEFLOWER, PALE ECHINACEA, PALE-FLOWER ECHINACEA

	14-2003	Seed from Shaw Nature Reserve of the Missouri Botanical Garden (formerly Shaw Arboretum of the Missouri Botanical Garden). Wild collected, Newton County, Arkansas.
	499-2007	Plant from various commercial sources. Garden collected.
	520-2007	Plant from various commercial sources. Garden collected.
	95-2010	Plant from various commercial sources. Garden collected.
	350-2010	Plant from various commercial sources. Garden collected.

Ehretia thyrsiflora (Siebold & Zucc.) Nakai BORAGINACEAE - BORAGE FAMILY
	USDA 7. HELIOTROPE EHRETIA

	28-81	Seed from Hangzhou Botanic Garden and Herbarium. Unknown collected.

Elaeagnus multiflora Thunb. ELAEAGNACEAE - OLEASTER FAMILY
	USDA 6. CHERRY-OLIVE

	303-51	Plant from H. Kohankie & Son. Garden collected.
	869-61	Plant from Arnold Arboretum of Harvard University. Garden collected.
	240-85	Cutting from The Morton Arboretum. Garden collected.

Eleocharis R.Br. (HERBACEOUS) CYPERACEAE - SEDGE FAMILY
	USDA 3 - 11. SPIKE-RUSH, SPIKE-SEDGE

	1393-2004	Plant from various commercial sources. Garden collected.

Eleutherococcus divaricatus (Siebold & Zucc.) Seem. ARALIACEAE - GINSENG FAMILY
	USDA 6. SPRAWLING SHRUB-GINSENG

	130-92	Cutting from The Morton Arboretum. Garden collected.

Eleutherococcus henryi Oliv. ARALIACEAE - GINSENG FAMILY
	USDA 6. HENRY'S SHRUB-GINSENG

	2985-22	Seed from Arnold Arboretum of Harvard University. Garden collected.
	62-24	Seed from Botanischer Garten der Universitat Bonn. Garden collected.
	227-84	Cutting from The Morton Arboretum. Garden collected.

Eleutherococcus senticosus Rupr. & Maxim. ARALIACEAE - GINSENG FAMILY
	USDA 3. SIBERIAN SHRUB-GINSENG

	481-37	Seed from Botanischer Garten und Botanisches Museum Berlin-Dahlem. Garden collected.
	225-90	Cutting from The Morton Arboretum. Garden collected.
	268-90	Seed from Staff, The Morton Arboretum. Wild collected in the Feng lin Preserve in the Wu ying division of the town of Yichun, Heilongjiang Sheng Province, China (Zhonghua). Habitat: understory of korean pine forest.
	300-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Fen Ling Preserve, Y. Wuying, Heilongjiang Sheng Province, China (Zhonghua).

Eleutherococcus sessiliflorus (Rupr. & Maxim.) S.Y.Hu ARALIACEAE - GINSENG FAMILY
	USDA 4. GLOBE-FLOWERED SHRUB-GINSENG

	2989-22	Seed from Arnold Arboretum of Harvard University. Garden collected.
	306-23	Seed from Joseph Hers. Wild collected, China (Zhonghua).
	307-83	Seed from Tallinn Botanical Garden of the Estonian Academy of Sciences. Wild collected in the Ussuri region, Russian S.F.S.R., U.S.S.R.
	299-85	Cutting from The Morton Arboretum. Garden collected.
	410-94	Cutting from The Morton Arboretum. From plant of known wild origin collected by Joseph Hers, China (Zhonghua).

Eleutherococcus sieboldianus (Makino) Koidz. ARALIACEAE - GINSENG FAMILY
	USDA 5. SIEBOLD'S SHRUB-GINSENG

	677-39	Cutting from Polish Academy of Sciences Insitute of Dendrology Arboretum. Garden collected.
	430-80	Cutting from The Morton Arboretum. Garden collected.
	611-82	Cutting from The Morton Arboretum. Garden collected.

Eleutherococcus sieboldianus 'Variegatus' ARALIACEAE - GINSENG FAMILY
	USDA 4. VARIEGATED SIEBOLD'S SHRUB-GINSENG

	274-94	Plant from Fertile Delta Garden Center. Garden collected.

Eleutherococcus spinosus (L.f.) S.Y.Hu ARALIACEAE - GINSENG FAMILY
	USDA 5. SPINY SHRUB-GINSENG

	442-96	Cutting from The Morton Arboretum. From plant of known wild origin collected around Oshimo-Mura near Mt. Fuji, Yamanashi-ken Prefecture, Chubu Region, Japan.

Eleutherococcus wardii (W.W.Sm.) S.Y.Hu ARALIACEAE - GINSENG FAMILY
	USDA 6. WARD'S SHRUB-GINSENG

	228-84	Cutting from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson site not noted, China (Zhonghua).
	198-2003	Cutting from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson site not noted, China (Zhonghua).
	358-U	Unknown from unknown. Unknown collected.

Elsholtzia stauntonii Benth. LAMIACEAE (LABIATAE) - MINT FAMILY
	USDA 5. MINT SHRUB

	592-34	Seed from New York Botanical Garden. Garden collected.
	237-68	Cutting from The Morton Arboretum. Garden collected.
	17-2000	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected in Beijing, Beijing Shi Municipality, China (Zhonghua).

Empetrum hermaphroditum (Lange) Hagerup EMPETRACEAE - CROWBERRY FAMILY
	USDA 3. BLACK CROWBERRY

	266-2001	Seed from Agder Natural History Museum and Botanical Garden. Wild collected at Asen, Iveland District, Aust-Agder County, Norway. Habitat: in Pinus sylvestris forest.

Ephedra distachya L. EPHEDRACEAE - JOINT FIR FAMILY
	USDA 3. EUROPEAN JOINT-FIR

	623-79	Seed from Main Botanical Garden. Wild collected, Crimean Region, Ukrainian S.S.R., U.S.S.R.

Ephedra equisetina Bunge EPHEDRACEAE - JOINT FIR FAMILY
	USDA 7. JOINT-FIR

	609-80	Seed from Main Botanical Garden. Wild collected Tadjikistan, Kirgizia, U.S.S.R.

Ephedra gerardiana Wall. EPHEDRACEAE - JOINT FIR FAMILY
	USDA 7. JOINT-FIR

	208-83	Seed from Botanical Garden of the Tadjik State University. Garden collected.

Ephedra intermedia Schrenk ex C.A.Mey. EPHEDRACEAE - JOINT FIR FAMILY
	USDA 6. JOINT-FIR

	40-82	Seed from Botanical Garden of the Botanical Institute. Wild collected site not noted, U.S.S.R.

Ephedra viridis Coville EPHEDRACEAE - JOINT FIR FAMILY
	USDA 9. MORMON-TEA

	16-81	Seed from State Arboretum of Utah. Wild collected, Utah/Arizona.
	367-86	Seed from Denver Botanic Gardens, Inc. Wild collected by unknown in the Rabbit Mountains, Utah.

Epimedium x perralchicum 'Frohnleiten' (HERBACEOUS) BERBERIDACEAE - BARBERRY FAMILY
	USDA 8. FROHNLEITEN BARRENWORT

	205-99	Plant from various commercial sources. Garden collected.
	231-2001	Plant from various commercial sources. Garden collected.
	501-2004	Plant from various commercial sources. Garden collected.

Epimedium pubigerum (DC.) Morren & Decne. (HERBACEOUS) BERBERIDACEAE - BARBERRY FAMILY
	USDA 5. CAUCASUS BARRENWORT

	364-99	Seed from Botanischer Garten der Johann Wolfgang Goethe-Universitat. Garden collected.

Epimedium x versicolor 'Sulphureum' (HERBACEOUS) BERBERIDACEAE - BARBERRY FAMILY
	USDA 5. YELLOW BARRENWORT

	248-2003	Plant from various commercial sources. Garden collected.
	358-2003	Plant from various commercial sources. Garden collected.
	615-2004	Plant from various commercial sources. Garden collected.
	206-2005	Plant from various commercial sources. Garden collected.
	736-2005	Plant from various commercial sources. Garden collected.
	280-U	Plant from various commercial sources. Garden collected.

Euonymus americanus L. CELASTRACEAE - STAFF TREE FAMILY
	USDA 5. STRAWBERRY-BUSH

	169-84	Plant from Staff, The Morton Arboretum. Wild collected by Ross C. Clark 0.3 mi NNE of Grays Arch, Daniel Boone National Forest, Powell County, Kentucky. Habitat: in mesic-oak-hickory forest above a trib.to King Branch.
	536-96	Seed from Staff, The Morton Arboretum. Wild collected by Peter J. van der Linden in Corkwood Natural History Area, west of Neelyville along state highway 142, Butler County, Missouri. Habitat: understory in rich bottomland woods.

Euonymus atropurpureus Jacq. CELASTRACEAE - STAFF TREE FAMILY
	USDA 5. WAHOO, AMERICAN BURNING BUSH, EASTERN BURNING BUSH, AMERICAN WAHOO

	561-81	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg 5 mi. SSW of Rushville, Schuyler County, Illinois.
	89-83	Seed from The Morton Arboretum Research Program. Wild collected, St. Genevieve County, Missouri.
	1146-2004	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2004 Ozark Expedition. Wild collected in Mark Twain National Forest, Hwy F, Barry County, Missouri. Habitat: riverine, soil silty clay, 1-5% se-slope.

Euonymus bungeanus Maxim. CELASTRACEAE - STAFF TREE FAMILY
	USDA 5. MANCHURIAN SPINDLE TREE

	297-84	Cutting from The Morton Arboretum. From plant of known wild origin collected by Dorsett & Morse in former Chihli Province, Hebei Province, China (Zhonghua).
	366-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Zhaung Ke (Old Village), Song Shan Forest Preserve, Yanqing County, Beijing Shi Municipality, China (Zhonghua). Habitat: open sunny heavily disturbed location along gravel road.
	61-U	Unknown from unknown. Unknown collected.

Euonymus cornutus Hemsl. CELASTRACEAE - STAFF TREE FAMILY
	USDA 9. BEAKED SPINDLE TREE

	877-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected in Bai Long Jiang Forest Station / Ge'er Gou, Zhou Qu Shen County, Gansu Province, China (Zhonghua). Habitat: steep ravine/gorge with e-running stream, mesic mixed decid/conif forest on 80 deg s-slope on thin soil.

Euonymus europaeus L. CELASTRACEAE - STAFF TREE FAMILY
	USDA 3. SPINDLE TREE

	95-82	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected Tessin, Switzerland.

Euonymus hamiltonianus Wall. CELASTRACEAE - STAFF TREE FAMILY
	USDA 6. HIMALAYAN SPINDLE TREE

	1120-36	Seed from Botanic Garden. Garden collected.
	503-37	Seed from Botanischer Garten und Botanisches Museum Berlin-Dahlem. Garden collected.
	116-88	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected Sowon Myon, South Ch'ungch'ong Province, Republic of Korea.

Euonymus latifolius (L.) Mill. CELASTRACEAE - STAFF TREE FAMILY
	USDA 6. BROAD-LEAVED SPINDLE TREE

	182-77	Cutting from The Morton Arboretum. Garden collected.
	15-98	Seed from Botanicki vrt PMF-a. Wild collected at Ravna gora, Croatia.

Euonymus macropterus Rupr. CELASTRACEAE - STAFF TREE FAMILY
	USDA 5. SPINDLE TREE

	712-36	Graft from Arnold Arboretum of Harvard University. Garden collected.
	330-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. Wild collected along Yalu River, Changbai County, Jilin Province, China (Zhonghua). Habitat: on rocky 30 degree northwest slope along road.
	40-2000	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Akagi Village north of Tokyo, Seta County, Gumma-ken Prefecture, Kanto Region, Japan.

Euonymus nanus var. turkestanicus (Dieck) Krysht. CELASTRACEAE - STAFF TREE FAMILY
	USDA 2. DWARF EUONYMUS

	228-82	Seed from Tallinn Botanical Garden of the Estonian Academy of Sciences. Wild collected western Tien Shan in central Asia, U.S.S.R.

Euonymus obovatus Nutt. CELASTRACEAE - STAFF TREE FAMILY
	USDA 3. RUNNING STRAWBERRY-BUSH

	460-78	Cutting from The Morton Arboretum. Garden collected.
	172-82	Plant from Staff, The Morton Arboretum. Wild collected by Ross C. Clark along west fork of Pigeon River, Haywood County, North Carolina. Habitat: Cove forest.
	477-86	Seed from Staff, The Morton Arboretum. Wild collected by Richard R. Wason, Allegan County, Michigan.
	179-88	Plant from Rivendell Botanic Garden. Wild collected site not noted, Illinois.
	317-2000	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. From plant of known wild origin collected in southworth Woods, Ingham County, Michigan. Habitat: mesic southern forest.
	650-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected along NC state highway 215 in Pisgah National Forest, Haywood County, North Carolina. Habitat: 60 deg. e-facing mesic mtn. slope in gritty loam over rock, sharply drained, thick organic/moss layer over rock.
	102-2010	Layer from The Morton Arboretum. From plant of known wild origin collected by Ross C. Clark along west fork of Pigeon River, Haywood County, North Carolina. Habitat: Cove forest.

Euonymus occidentalis Nutt. ex Torr. CELASTRACEAE - STAFF TREE FAMILY
	USDA 6. WESTERN BURNING BUSH

	200-2003	Cutting from The Morton Arboretum. From plant of known wild origin collected Willamette Valley, Oregon.

Euonymus oxyphyllus Miq. CELASTRACEAE - STAFF TREE FAMILY
	USDA 5. SHARP-LEAVED EUONYMUS

	4-98	Seed from Peter Podaras. Wild collected by Heronswood/Cobblewood 1997 Japan/Korea Expedition Heronswood Nursery, Ltd. in valley near Jingdong village, Kangwon-do Province, Republic of Korea. Habitat: along streambank.
	27-2001	Seed from Chollipo Arboretum. Wild collected on Mt. Chiri, North Cholla Province, Republic of Korea.
	1037-2004	Plant from The Holden Arboretum. Wild collected by March, Yinger, Bristol, Meyer, Chang, 1984 KNW Expedition east of Chunghwa Dong village, half way to Changchon where mountain road turns north toward Yonji Dong, Paekryong Is., Paekryong-myon, Ongjin Gun, Kyonggi-do Province, Republic of Korea. Habitat: e-facing cut-over slope above rice paddies.

Euonymus pauciflorus Maxim. CELASTRACEAE - STAFF TREE FAMILY
	USDA 5. FEW-FLOWERED SPINDLE TREE

	267-90	Seed from Staff, The Morton Arboretum. Wild collected in the Feng lin Preserve in the Wu ying division of the town of Yichun, Heilongjiang Sheng Province, China (Zhonghua). Habitat: understory and edge of upland korean pine forest.
	325-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: in moist valley only; woodland understory.
	19-96	Seed from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: in moist valley only; woodland understory.

Euonymus phellomanus Loes. CELASTRACEAE - STAFF TREE FAMILY
	USDA 5. CORKY EUONYMUS

	3-37	Seed from F. Stern. Garden collected.
	242-85	Cutting from The Morton Arboretum. Garden collected by Joseph F. Rock Maha Ku and Nyibaku Divide, Ha Tebbu land, China (Zhonghua).

Euonymus planipes (Koehne) Koehne CELASTRACEAE - STAFF TREE FAMILY
	USDA 4. EAST ASIAN SPINDLE TREE

	317-99	Seed from Botanic Garden, Faculty of Agriculture, Hokkaido University. Garden collected.

Euonymus przewalskii Maxim. CELASTRACEAE - STAFF TREE FAMILY
	USDA 6. TIBETAN SPINDLE TREE

	381-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Mu Chang (Big Trunk Field), Baihua Shan Forest Preserve, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: shaded understory on a west slope among boulders.

Euonymus sachalinensis (F.Schmidt) Maxim. CELASTRACEAE - STAFF TREE FAMILY
	USDA 6. SACHALIN ISLAND SPINDLE TREE

	284-99	Seed from Willowwood Arboretum. Garden collected.

Euonymus sanguineus Loes. ex Diels CELASTRACEAE - STAFF TREE FAMILY
	USDA 6. RED-TWIGGED SPINDLE TREE

	325-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Wild collected Ling Kong Shan Zhen, Qinyan County, Shanxi Province, China (Zhonghua). Habitat: in mesic oak-pine mixed deciduous forest at top of 80 deg. s-facing slope in thin rocky soil.

Euonymus verrucosus Scop. CELASTRACEAE - STAFF TREE FAMILY
	USDA 6. WARTY BURNING BUSH

	243-85	Cutting from The Morton Arboretum. From plant of known wild origin collected under Mt. Alan peak, south Velebit, Croatia Republic, Yugoslavia.

Euphorbia cyparissias 'Fens Ruby' (HERBACEOUS) EUPHORBIACEAE - SPURGE FAMILY
	USDA 4. FENS RUBY CYPRESS SPURGE

	194-2004	Plant from various commercial sources. Garden collected.

Euptelea pleiosperma Hook.f. & Thomson TROCHODENDRACEAE - TROCHODENDRON FAMILY
	USDA 6. FATHER DAVID'S EUPTELEA, EUPTELEA, MANY SEEDED EUPTELEA

	874-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected in Bai Long Jiang Forest Station / Ge'er Gou, Zhou Qu Shen County, Gansu Province, China (Zhonghua). Habitat: mesic mixed conif./decid. forest in ne-facing valley with steep slopes, long cool ravine/gorge, thin rocky soil.

Evodia daniellii (Benn.) Hemsl. RUTACEAE - RUE FAMILY
	USDA 5. KOREAN EVODIA

	645-35	Seed from New York Botanical Garden. Garden collected.
	374-2002	Seed from Arbor Lodge State Historical Park. Garden collected.

Fagus grandifolia Ehrh. FAGACEAE - BEECH FAMILY
	USDA 3. AMERICAN BEECH

	169-37	Plant from Cole Nursery Co. Garden collected.
	242-44	Plant from Thomas B. Meehan Co. Garden collected.
	654-50	Plant from Evergreen Nursery Co., Inc. Garden collected.
	252-57	Plant from James B. Plesscher & Sons Nursery. Garden collected.
	184-63	Plant from Evergreen Nursery Co., Inc. Wild collected near Sturgeon Bay, Door County, Wisconsin.
	807-65	Plant from Staff, The Morton Arboretum. Wild collected by Roy M. Nordine on property of Mr. Wm. Werts near Ephriam, Door County, Wisconsin. Habitat: Woods.
	3-68	Plant from Linderman's Chesterton Nurseries. Garden collected.
	54-69	Plant from Linderman's Chesterton Nurseries. Garden collected.
	61-72	Plant from Linderman's Chesterton Nurseries. Garden collected.
	516-75	Plant from Linderman's Chesterton Nurseries. Garden collected.
	61-90	Plant from Klehm Nursery. Garden collected.

Fagus grandifolia var. caroliniana (Loudon) Fernald & Rehder FAGACEAE - BEECH FAMILY
	USDA 5. SOUTHERN AMERICAN BEECH

	26-2006	Graft from Arnold Arboretum of Harvard University. Wild collected 8-10 miles NW of Woodville on Highway 287, Tyler County, Texas.

Fagus sylvatica 'Dawyck Purple' FAGACEAE - BEECH FAMILY
	USDA 5. DAWYCK PURPLE EUROPEAN BEECH

	510-2004	Plant from Charles J. Fiore Company, Inc. Garden collected.
	287-2006	Plant from Listerman & Associates, Inc. Garden collected.

Fagus sylvatica 'Pendula' FAGACEAE - BEECH FAMILY
	USDA 5. WEEPING EUROPEAN BEECH

	4-53	Plant from Charles J. Fiore Company, Inc. Garden collected.
	259-61	Plant from Horton Nurseries, Inc. Garden collected.
	165-69	Graft from The Morton Arboretum. Garden collected.

Festuca glauca 'Elijah Blue' (HERBACEOUS) POACEAE (GRAMINEAE) - GRASS FAMILY
	USDA 4 - 11. ELIJAH BLUE HARD FESCUE

	528-2004	Plant from various commercial sources. Garden collected.
	750-2004	Plant from various commercial sources. Garden collected.
	835-2005	Plant from various commercial sources. Garden collected.

Filipendula rubra (Hill) B.L.Rob. (HERBACEOUS) ROSACEAE - ROSE FAMILY
	USDA 2. QUEEN OF THE PRAIRIE, PRAIRIE MEADOWSWEET

	816-2004	Plant from various commercial sources. Garden collected.
	922-2004	Plant from various commercial sources. Garden collected.
	382-U	Seed from The Morton Arboretum. Wild collected by Raymond F. Schulenberg Chicago Region, Illinois. Habitat: prairie.

Fontanesia fortunei Carriere OLEACEAE - OLIVE FAMILY
	USDA 5. FALSE PRIVET

	632-22	Plant from H. Kohankie & Son. Garden collected.
	278-48	Plant from Burton's Hill Top Nurseries (Hill Top Nurseries). Garden collected.
	947-60	Cutting from The Morton Arboretum. Garden collected.
	64-U	Unknown from unknown. Unknown collected.

Forestiera acuminata (Michx.) Poir. OLEACEAE - OLIVE FAMILY
	USDA 5. SWAMP-PRIVET

	277-22	Cutting from Arnold Arboretum of Harvard University. Garden collected.
	1653-25	Seed from Central Experimental Farm Botanical Garden and Arboretum Ottawa Research Station, Ornamentals Section. Garden collected.
	536-28	Plant from Ernest J. Palmer. Wild collected near Neck City, Missouri.
	370-82	Cutting from The Morton Arboretum. From plant of known wild origin collected by Ernest J. Palmer near Neck City, Missouri.
	209-84	Layer from Rivendell Botanic Garden. Wild collected, Cass County, Illinois. Habitat: mesic bottomland forest.

Forestiera ligustrina (Michx.) Poir. OLEACEAE - OLIVE FAMILY
	USDA 6. UPLAND FORESTIERA

	328-78	Cutting from The Morton Arboretum. From plant of known wild origin collected by Roy M. Nordine from Cedar Glade Barrens, 10 miles south of Murfreesboro, Rutherford County, Tennessee.
	340-85	Cutting from The Morton Arboretum. From plant of known wild origin collected by Roy M. Nordine from Cedar Glade Barrens, 10 miles south of Murfreesboro, Rutherford County, Tennessee.

Forestiera neo-mexicana Gray OLEACEAE - OLIVE FAMILY
	USDA 6. DESERT-OLIVE

	360-72	Seed from Research Institute of Ecology and Botany Hungarian Academy of Sciences Botanical Garden. Garden collected.
	443-83	Cutting from The Morton Arboretum. Garden collected.
	153-94	Seed from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. From plant of known wild origin collected along Hwy 141 near Uravan, Montrose County, Colorado.

Forsythia suspensa (Thunb.) Vahl OLEACEAE - OLIVE FAMILY
	USDA 5. WEEPING FORSYTHIA, FORSYTHIA, GOLDENBELLS, WEEPING GOLDENBELLS

	80-96	Plant from W. A. Gustafson, Ph.D., University of Nebraska, Department of Horticulture. Wild collected northern part, China (Zhonghua).

Forsythia viridissima var. koreana 'Suwan Gold' OLEACEAE - OLIVE FAMILY
	USDA 5. SUWAN GOLD KOREAN FORSYTHIA

	154-2004	Plant from Spring Meadow Nursery, Inc. Garden collected.

Frangula purshiana (DC.) J.G.Cooper RHAMNACEAE - BUCKTHORN FAMILY
	USDA 7. CASCARA BUCKTHORN, CASCARA SAGRADA, CHITTAMBARK, WESTERN BUCKTHORN

	959-80	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along the Lochsa River in Star Meadows, Idaho County, Idaho. Habitat: wet meadow edge.
	208-2003	Cutting from The Morton Arboretum. From plant of known wild origin collected by Edward Hedborn along the Lochsa River in Star Meadows, Idaho County, Idaho. Habitat: wet meadow edge.
	477-2006	Cutting from The Morton Arboretum. From plant of known wild origin collected by Edward Hedborn along the Lochsa River in Star Meadows, Idaho County, Idaho. Habitat: wet meadow edge.

Fraxinus americana var. biltmoreana (Beadle) J.Wright ex Fernald OLEACEAE - OLIVE FAMILY
	USDA 3. BILTMORE ASH

	675-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected near bank of French Broad River at the intersection with Blue Ridge Parkway, on Biltmore Estate, Buncombe County, North Carolina. Habitat: sw exposure in full sun on river bank.

Fraxinus americana 'Tures' OLEACEAE - OLIVE FAMILY
	USDA 4. WINDY CITYÔ

	547-96	Plant from Hinsdale Nurseries Inc. Garden collected.

Fraxinus angustifolia Vahl OLEACEAE - OLIVE FAMILY
	USDA 6. NARROW-LEAVED ASH

	209-71	Seed from Johannes Guttenberg-Universitat Mainz. Garden collected.
	171-76	Plant from United States National Arboretum. Garden collected.

Fraxinus anomala Torr. ex S.Watson OLEACEAE - OLIVE FAMILY
	USDA 6. SINGLE-LEAVED ASH, DWARF ASH, SINGLELEAF ASH, UTAH ASH

	499-85	Seed from Rivendell Botanic Garden. Wild collected, Mesa County, Colorado. Habitat: On limestone..

Fraxinus bungeana DC. OLEACEAE - OLIVE FAMILY
	USDA 5. CHINESE FLOWERING ASH

	51-2008	Plant from The Morton Arboretum Research Program. Garden collected.

Fraxinus caroliniana Mill. OLEACEAE - OLIVE FAMILY
	USDA 6. CAROLINA ASH

	54-85	Seed from The Morton Arboretum Research Program. Wild collected, Winn County, Louisiana.

Fraxinus chinensis Roxb. OLEACEAE - OLIVE FAMILY
	USDA 6. CHINESE ASH

	514-57	Seed from Botanischer Garten und Botanisches Museum Berlin-Dahlem. Garden collected.
	398-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Guang Ri Tuo (Hill Where Sunrise is Seen), Xiao Long Meng Forest Preserve, Dongling Shan, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: roadside in drainage ditch in full sun.

Fraxinus chinensis ssp. rhynchophylla (Hance) E.Murray OLEACEAE - OLIVE FAMILY
	USDA 6. KOREAN ASH

	581-50	Seed from Northeastern Forest Experiment Station. Wild collected, Akita Prefecture, Tohoku-chiho Region, Japan.
	758-57	Plant from Northeastern Forest Experiment Station. Wild collected by Tsuruoka Dist. Ofc., Tsuruoka National Forest Tsuruoka National Forest, Akita Prefecture, Tohoku-chiho Region, Japan.
	420-83	Seed from Botanical Garden of the Latvian State University. Wild collected Partizansk District, Mount Czandalaz (now called Lazov ridge), Russian S.F.S.R., U.S.S.R. Habitat: mountains.
	315-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected near Wuling Shan village, Hebei Province, China (Zhonghua). Habitat: e-facing shear cliff on ledge in poor gravelly soils.
	358-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Zhaung Ke (Old Village), Song Shan Forest Preserve, Yanqing County, Beijing Shi Municipality, China (Zhonghua). Habitat: full sun in stream-deposited dry, well-drained, soils.
	598-2006	Bud from The Morton Arboretum. From plant of known wild origin collected, Akita Prefecture, Tohoku-chiho Region, Japan.

Fraxinus latifolia Benth. OLEACEAE - OLIVE FAMILY
	USDA 7. OREGON ASH

	144-94	Seed from Hoyt Arboretum. Wild collected in northwestern section, Oregon.

Fraxinus nigra Marshall OLEACEAE - OLIVE FAMILY
	USDA 7. BLACK ASH

	625-61	Plant from E. L. Kammerer, The Morton Arboretum. Wild collected near Marcellus, Cass County, Michigan.
	90-85	Plant from Possibility Place Nursery, Inc. Wild collected Trout Park, Elgin, Illinois.
	188-86	Plant from Environmental Collaborative. Garden collected.
	110-89	Plant from Environmental Collaborative. Garden collected.

Fraxinus ornus L. OLEACEAE - OLIVE FAMILY
	USDA 6. FLOWERING ASH, MANNA, MANNA ASH

	19-77	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected Vinac near Jajce, Bosnia and Hercegovina Republic, Yugoslavia.
	692-79	Seed from Hortus Botanicus 'Soroksarensis' Universitatis Hortuculturae Alimentario-Technieaque. Wild collected near Csakvar, Fejer County, Hungary. Habitat: solo calcareo.
	730-80	Seed from Hortus Botanicus 'Soroksarensis' Universitatis Hortuculturae Alimentario-Technieaque. Wild collected Bakonyicum, Vesprimense, Csakvar, Fejer County, Hungary. Habitat: solo calcareo.

Fraxinus oxycarpa Willd. OLEACEAE - OLIVE FAMILY
	USDA 6. PERSIAN ASH

	135-72	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Garden collected.
	220-76	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected near Caplina, Bosnia and Hercegovina Republic, Yugoslavia.
	265-2000	Seed from Orto Botanico dell'Universita Botanical Garden of the University of Siena. Wild collected by unknown C/o il bivio per Campagnatico, Grosseto Province, Italy. Habitat: in mixed woods.

Fraxinus pallisae Wilmott OLEACEAE - OLIVE FAMILY
	USDA 6. BALKAN ASH

	531-83	Seed from Gradina Botanica a Universitatii din Bucuresti. Wild collected Caraorman, Tulcea District, Romania.

Fraxinus paxiana Lingelsh. OLEACEAE - OLIVE FAMILY
	USDA 5. PAX'S ASH, PAX ASH

	34-93	Seed from Shanghai Botanic Garden. Wild collected on Mt. Emei and in Jiuzhaigou area, Sichuan Province, China (Zhonghua). Habitat: in mixed forest.

Fraxinus pennsylvanica Marshall OLEACEAE - OLIVE FAMILY
	USDA 3. RED ASH

	385-48	Graft from County of Monroe Department of Parks. Garden collected.
	386-48	Graft from County of Monroe Department of Parks. Garden collected.
	904-50	Plant from The Morton Arboretum. Garden collected.
	736-55	Graft from The Morton Arboretum. Garden collected.
	432-72	Graft from The Morton Arboretum. Garden collected.
	552-82	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn about 2 miles south of Plano, Kendall County, Illinois. Habitat: Along a river road.
	188-94	Plant from Klehm Nursery. Garden collected.

Fraxinus sogdiana Bunge OLEACEAE - OLIVE FAMILY
	USDA 5. TURKESTAN ASH

	177-84	Seed from Botanical Garden of the Kirghiz Academy of Science. Wild collected site not noted, U.S.S.R.

Fraxinus syriaca Boiss. OLEACEAE - OLIVE FAMILY
	USDA 5. SYRIAN ASH

	646-72	Graft from The Morton Arboretum. Garden collected.

Fraxinus texensis (Gray) Sarg. OLEACEAE - OLIVE FAMILY
	USDA 7. TEXAS ASH

	55-85	Seed from The Morton Arboretum Research Program. Wild collected, Murray County, Oklahoma.
	504-99	Plant from Sunshine Nursery. Wild collected near Mineral Wells, Palo Pinto County, Oklahoma.

Fraxinus tomentosa F.Michx. OLEACEAE - OLIVE FAMILY
	USDA 6. PUMPKIN ASH

	122-31	Graft from The Morton Arboretum. Garden collected.
	355-33	Graft from The Morton Arboretum. From plant of known wild origin collected by Charles C. Deam, Jackson County, Indiana.
	1193-38	Plant from University of Kentucky. Garden collected.
	390-48	Graft from Deam Arboretum. Garden collected.
	90-83	Seed from The Morton Arboretum Research Program. Wild collected, Dunklin County, Missouri.
	310-86	Bud from The Morton Arboretum. Garden collected.
	44-94	Seed from Metropolitan Toronto Zoo. Wild collected, Essex County, Ontario Province, Canada. Habitat: at edge of wet woods.

Gaillardia 'Tokayer' (HERBACEOUS) ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 4. TOKAJER BLANKET FLOWER

	170-2005	Plant from various commercial sources. Garden collected.

Gaylussacia baccata (Wangenh.) K.Koch ERICACEAE - HEATH FAMILY
	USDA 6. HUCKLEBERRY

	57-81	Plant from Stan Tyson, Horticultural Propagation Ltd. Wild collected, Schuyler County, Illinois. Habitat: acidic clay over decomposed sandstone road.

Genista germanica L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. GERMAN BROOM

	137-85	Seed from Botanika Zahrada University P.J. Safarika. Wild collected Eucarpaticum, Czechoslovakia.

Genista pilosa L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. BROOM

	568-80	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected, Haute-Savoie Department, France.

Genista radiata (L.) Scop. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. BROOM

	459-79	Seed from Provincia di Pesaro e Urbino Centro Ricerche Floristiche Marche. Wild collected southwest of M. Catria, Marche Region, Italy. Habitat: rockers calcaires sur le versaant.

Genista sagittalis L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. ARROW BROOM

	140-99	Seed from Agrobotanic Garden of the University of Agricultural Sciences Department of Botany. Garden collected.

Genista tinctoria L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. DYER'S GREENWEED, DYER'S BROOM, WOADWAXEN, WOODWAXEN

	138-85	Seed from Botanika Zahrada University P.J. Safarika. Wild collected Praecarpaticum, Czechoslovakia.
	117-2001	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected by M. Widrlechner, U.S.D.A., Agricultural Research Service, North Central Regional Plant Introduction Station across from the local forestry office, southwest edge of Okhtyrka, Sumy, Ukraine. Habitat: full sun, 0-1% slope with an eastern exposure, well drained sand.
	118-2001	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected by M. Widrlechner, U.S.D.A., Agricultural Research Service, North Central Regional Plant Introduction Station near Poltava northwest of Klishchevka in the valley of the Ps'ol River, Ukraine. Habitat: open meadow/steppe, full sun, 0-1% slope, sandy loam soil with good drainage.

Geranium x magnificum Hyl. (HERBACEOUS) GERANIACEAE - GERANIUM FAMILY
	USDA 5. MAGNIFICENT GERANIUM

	436-2001	Plant from various commercial sources. Garden collected.
	725-2005	Plant from various commercial sources. Garden collected.
	817-2005	Plant from various commercial sources. Garden collected.

Ginkgo biloba 'Magyar' GINKGOACEAE - GINKGO FAMILY
	USDA 3. MAGYAR GINKGO

	207-94	Plant from Klehm Nursery. Garden collected.

Ginkgo biloba 'Pendula' GINKGOACEAE - GINKGO FAMILY
	USDA 5. WEEPING GINKGO

	1285-2004	Plant from Beaver Creek Nursery, Inc. Garden collected.
	18-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Gleditsia aquatica Marshall FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. WATER-LOCUST

	432-54	Graft from Royal Botanic Gardens Kew. Garden collected.
	5-93	Seed from Tom Dilatush. Wild collected along the Lower Cache River, Johnson County, Illinois. Habitat: river bottoms.
	6-93	Seed from Tom Dilatush. Wild collected in the vicinity of Mingo National Wildlife Refuge, near Puxico, Stoddard County, Missouri.
	7-93	Seed from Tom Dilatush. Wild collected in the northwest corner of the county, Stoddard County, Missouri.

Gleditsia caspica Desf. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. CASPIAN-LOCUST

	163-73	Seed from Central Republic Botanical Garden of the Ukrainian Academy of Sciences. Garden collected.
	176-91	Cutting from The Morton Arboretum. Garden collected.

Gleditsia delavayi Franch. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 8. DELAVAY-LOCUST

	425-74	Seed from Botanical Garden of the Uzbek Academy of Sciences. Garden collected.

Gleditsia japonica Miq. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. JAPANESE-LOCUST

	311-29	Plant from Charles C. Deam. Garden collected.
	283-71	Seed from Jardin Botanique de l'Universite Louis Pasteur de Strasbourg. Garden collected.

Gleditsia sinensis Lam. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 5. CHINESE-LOCUST

	294-81	Seed from Chinese Academy of Forestry, Research Institute of Forestry. Wild collected, China (Zhonghua). Habitat: temperate region of N and NW China.

Gleditsia x texana Sarg. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. TEXAS-LOCUST

	427-74	Seed from Botanical Garden of the Uzbek Academy of Sciences. Garden collected.

Gleditsia triacanthos L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 3. HONEY-LOCUST

	2537-23	Plant from The Morton Arboretum. Garden collected.
	445-82	Plant from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg west bank of the Du Page River, Will County, Illinois. Habitat: riverbank.
	68-U	Unknown from unknown. Unknown collected.

Gleditsia triacanthos 'Imperial' Patent 1605 FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 4. IMPERIAL HONEY-LOCUST

	368-56	Plant from William H. Collins, The Cole Nursery Co. Garden collected.
	124-57	Plant from Cole Nursery Co. Garden collected.
	373-58	Plant from William H. Collins, The Cole Nursery Co. Garden collected.
	84-94	Plant from Western DuPage Landscaping. Garden collected.
	1061-2004	Plant from Valley Crest Landscape Development. Garden collected.

Gleditsia triacanthos 'Skyline' Patent 1619 FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 4. SKYLINE HONEY-LOCUST

	367-56	Plant from William H. Collins, The Cole Nursery Co. Garden collected.
	374-58	Plant from William H. Collins, The Cole Nursery Co. Garden collected.
	1092-2004	Plant from Klehm Nursery. Garden collected.
	418-2005	Plant from Charles J. Fiore Company, Inc. Garden collected.
	372-2007	Plant from The Morton Arboretum Research Program. Garden collected.

Globularia cordifolia L. GLOBULARIACEAE - GLOBULARIA FAMILY
	USDA 5. GLOBE-DAISY

	173-84	Seed from Jardin de la Station Alpine du Lautaret (Hautes-Alpes) Laboratoire de Botanique. Wild collected Lantreat, France.

Grewia biloba var. parviflora (Bunge) Hand.-Mazz. TILIACEAE - LINDEN FAMILY
	USDA 6. SMALL-FLOWERED GREWIA

	245-47	Seed from Morris Arboretum of the University of Pennsylvania. Garden collected.
	360-56	Plant from Burton's Hill Top Nurseries (Hill Top Nurseries). Garden collected.
	551-96	Seed from Magnolia Society c/o Mr. Ray Tessmer, seed chairman. Wild collected around Chollipo, Sowon-Myon, Taean-Gun, South Ch'ungch'ong Province, Republic of Korea.

Halesia tetraptera Ellis STYRACACEAE - STORAX FAMILY
	USDA 5. SILVERBELL, CAROLINA SILVERBELL

	476-30	Plant from H. Kohankie & Son. Garden collected.
	39-32	Plant from Cole Nursery Co. Garden collected.
	259-32	Seed from F. W. Schumacher. Garden collected.
	565-39	Seed from Morris Arboretum of the University of Pennsylvania. Garden collected.
	177-41	Plant from H. Kohankie & Son. Garden collected.
	238-57	Plant from Harlan P. Kelsey Nursery Co. Garden collected.
	684-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected along French Broad River near intersection of Fanning Melds and Fanning Bridge Roads, Henderson County, North Carolina. Habitat: full sun, scrub, silt loam, thick organic layer.
	594-2005	Plant from Moon Nurseries of Maryland. Garden collected.

Halimodendron halodendron (L.) Voss FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 2. SALT TREE

	260-60	Seed from Botanical Garden of the Uzbek Academy of Sciences. Wild collected Central Asia, U.S.S.R.
	724-80	Seed from Main Botanical Garden of Kazakh Academy of Sciences. Wild collected, Kazakh S.S.R., U.S.S.R.
	210-83	Seed from Botanical Garden of the Tadjik State University. Wild collected, U.S.S.R.

Hamamelis vernalis 'Sandra' HAMAMELIDACEAE - WITCH-HAZEL FAMILY
	USDA 5. SANDRA VERNAL WITCH-HAZEL, SANDRA OZARK WITCH-HAZEL, SANDRA SPRING WITCH-HAZEL

	306-2003	Plant from Beaver Creek Nursery, Inc. Garden collected.
	1010-2004	Plant from Beaver Creek Nursery, Inc. Garden collected.

Hedera helix L. ARALIACEAE - GINSENG FAMILY
	USDA 5. IVY, ENGLISH IVY

	113-42	Plant from Wayside Gardens. Garden collected.
	1193-55	Cutting from Gulf Stream Nursery. Garden collected.
	417-65	Cutting from Staff, The Morton Arboretum. Garden collected Camp Sagawaw County Forest Preserve near Archer Ave. and Rt. 83. Habitat: n-facing slope in woodland.
	845-80	Cutting from Helen Tarr. Garden collected.
	422-86	Plant from Planter's Palette. Garden collected.
	408-96	Plant from Classic Groundcovers. Garden collected.
	74-U	Unknown from unknown. Unknown collected.

Helianthemum nummularium ssp. grandiflorum Scop. CISTACEAE - ROCKROSE FAMILY
	USDA 4. SUN-ROSE, LARGE-FLOWERED SUN-ROSE

	194-78	Seed from Botanischer Garten der Karl-Marx-Universitat. Garden collected.
	257-83	Seed from Botanic Garden of Natural Science Faculty of Komensky University. Wild collected Male Sejfy, Slovensky Raj, West Slovakia Region, Slovak S.S.R., Czechoslovakia.
	258-83	Seed from Botanic Garden of Natural Science Faculty of Komensky University. Wild collected Male Karpaty, Prievaly, West Slovakia Region, Slovak S.S.R., Czechoslovakia.

Hemerocallis dumortieri C.Morren (HERBACEOUS) HEMEROCALLIDACEAE - DAYLILY FAMILY
	USDA 4. DUMORTIER'S DAYLILY

	359-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. Wild collected, Changbai County, Jilin Province, China (Zhonghua). Habitat: in open meadow along stream and especially on drier slopes (30 degree west slopes).

Hemerocallis thunbergii Baker (HERBACEOUS) HEMEROCALLIDACEAE - DAYLILY FAMILY
	USDA 4. THUNBERG'S DAYLILY, LATE YELLOW DAYLILY

	337-2003	Plant from Botanic Garden of the Chicago Horticultural Society. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition at Da Mu Chang (Big Trunk Field), Baihua Shan Forest Preserve, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: full sun, open meadows on top of hills.
	938-2005	Plant from various commercial sources. Garden collected.

Hemiptelea davidii (Hance) Planch. ULMACEAE - ELM FAMILY
	USDA 5. HEMIPTELEA

	1317-58	Plant from The Morton Arboretum. Garden collected.
	444-83	Cutting from The Morton Arboretum. Garden collected.

Hibiscus syriacus L. MALVACEAE - MALLOW FAMILY
	USDA 5. ROSE-OF-SHARON, SHRUBBY ALTHEA

	237-78	Seed from Jardin Botanique de l'Universite Louis Pasteur de Strasbourg. Garden collected.
	175-83	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Garden collected.

Hippophae rhamnoides L. ELAEAGNACEAE - OLEASTER FAMILY
	USDA 3. SEA-BUCKTHORN

	272-78	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected Sary Chelec Pres. Kirgizskiy Khrebet of W.Tien Shan Mts., Kirghiz S.S.R., U.S.S.R.
	304-90	Seed from Staff, The Morton Arboretum. Wild collected near Pangquangou, Shanxi Province, China (Zhonghua). Habitat: in an open disturbed area near a creek.
	183-93	Seed from 1993 Expedition to Russia (Gorno-Altai) Chicago BG, Holden Arb, Minn. Landsc. Arb, Mo. BG, & Morton Arb. Wild collected by Peter J. van der Linden, The Morton Arboretum in lowland along the Katun River a few kilometers from the city of Bisk, Rossiya (Russia) Republic, Russia. Habitat: in sandy soil near river.

Holboellia fargesii Reaub. LARDIZABALACEAE - LARDIZABALA FAMILY
	USDA 9. FARGES HOLBOELLIA

	516-99	Cutting from The Morton Arboretum. From plant of known wild origin collected Qinling Mountains, China (Zhonghua).

Holodiscus discolor (Pursh) Maxim. ROSACEAE - ROSE FAMILY
	USDA 5. OCEAN SPRAY

	209-87	Seed from Staff, The Morton Arboretum. Wild collected by Kris Bachtell Sequoia Bay State Park, a few miles east of Sequoia along U.S. 101, Clallam County, Washington. Habitat: roadside.

Hovenia dulcis Thunb. RHAMNACEAE - BUCKTHORN FAMILY
	USDA 6. RAISIN TREE

	528-79	Seed from Arnold Arboretum of Harvard University. Garden collected.
	347-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Wild collected Shu Pi Gou, Mang He Zhen, Yang Cheng Xian County, Shanxi Province, China (Zhonghua). Habitat: mesic mixed deciduous forest in shady 30 deg. n-facing slope in rich organic soil.

Hydrangea heteromalla D.Don HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 6. HIMALAYAN HYDRANGEA

	338-86	Cutting from The Morton Arboretum. Garden collected.

Hydrangea involucrata Siebold HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 7. HYDRANGEA

	210-98	Plant from W. J. Beal Botanical Garden, Michigan State University. Garden collected.
	211-98	Plant from W. J. Beal Botanical Garden, Michigan State University. Garden collected.

Hydrangea macrophylla (Thunb.) Ser. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 6. BIG-LEAVED HYDRANGEA, FRENCH HYDRANGEA

	254-2005	Plant from Kris Bachtell, The Morton Arboretum. Garden collected.

Hydrangea paniculata 'Little Lamb' Patent ppaf HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 3. LITTLE LAMB PANICLED HYDRANGEA

	157-2004	Plant from Spring Meadow Nursery, Inc. Garden collected.

Hydrangea petiolaris Siebold & Zucc. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 5. CLIMBING HYDRANGEA

	294-82	Plant from T & Z Nursery. Garden collected.
	119-87	Plant from T & Z Nursery. Garden collected.
	198-90	Plant from T & Z Nursery. Garden collected.
	5-98	Seed from Peter Podaras. Wild collected by Heronswood/Cobblewood 1997 Japan/Korea Expedition Heronswood Nursery, Ltd. around Lake Towado, Aomori Prefecture, Tohoku-chiho Region, Japan. Habitat: along roadside.
	300-2004	Plant from Hortech. Garden collected.
	734-2005	Plant from Intrinsic Perennial Gardens. Garden collected.

Hydrangea quercifolia 'Sikes Dwarf' HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 5. SIKES DWARF OAK-LEAVED HYDRANGEA

	160-98	Plant from Spring Meadow Nursery, Inc. Garden collected.
	250-2001	Plant from Charles J. Fiore Company, Inc. Garden collected.

Hydrangea quercifolia 'Snow Queen' Patent 4458 HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 5. SNOW QUEEN OAK-LEAVED HYDRANGEA

	53-90	Plant from Wayside Gardens. Garden collected.
	433-96	Plant from Charles J. Fiore Company, Inc. Garden collected.
	145-2000	Plant from Fairview Gardens, Inc. Garden collected.
	536-2004	Plant from David Listerman & Associates. Garden collected.
	604-2005	Plant from Charles J. Fiore Company, Inc. Garden collected.
	615-2005	Plant from Mariani Nursery. Garden collected.
	772-2005	Plant from Scarff's Nursery Co. Garden collected.

Hydrangea scandens (L.f.) Ser. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 9.

	70-2002	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected on Mt. Akagi, Kitatachibana village, Seta-gun (county), Gumma-ken Prefecture, Kanto Region, Japan.
	235-2002	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected on Mt. Akagi, Kitatachibana village, Seta-gun (county), Gumma-ken Prefecture, Kanto Region, Japan.

Hylotelephium populifolium (Pall.) H.Ohba CRASSULACEAE - ORPINE FAMILY
	USDA 2. POPLAR-LEAVED STONECROP, POPLAR STONECROP

	251-2002	Division from The Morton Arboretum. Garden collected.

Hypericum kalmianum L. HYPERICACEAE (GUTTIFERAE) - SAINT JOHN'S WORT FAMILY
	USDA 5. KALM'S ST. JOHN'S WORT

	280-97	Cutting from The Morton Arboretum. From plant of known wild origin collected by Raymond F. Schulenberg Illinois Beach State Park, Lake County, Illinois.
	366-2002	Plant from Possibility Place Nursery, Inc. Garden collected.
	673-2004	Plant from Midwest Groundcovers. Garden collected.
	1322-2004	Plant from Mariani Nursery. Garden collected.

Hypericum pyramidatum Aiton (HERBACEOUS) HYPERICACEAE (GUTTIFERAE) - SAINT JOHN'S WORT FAMILY
	USDA 3. GREAT ST. JOHN'S WORT

	377-85	Plant from John Banazak. Wild collected 1/4 mi. north of 31st. St. and 1/4 mi. west of Wolf rd., Cook County, Illinois. Habitat: Wet prairie.
	925-2004	Plant from various commercial sources. Garden collected.

Hypericum 'Sungold' Patent 568 HYPERICACEAE (GUTTIFERAE) - SAINT JOHN'S WORT FAMILY
	USDA 5. SUNGOLD ST. JOHN'S WORT

	701-61	Cutting from The Morton Arboretum. Garden collected.
	811-2004	Plant from Shemin Nurseries, Inc. Garden collected.

Hyssopus officinalis L. LAMIACEAE (LABIATAE) - MINT FAMILY
	USDA 5. HYSSOP

	144-78	Seed from Botanischer Garten der Technischen Universitat Dresden. Garden collected.
	215-U	Plant from various commercial sources. Garden collected.

Iberis sempervirens L. BRASSICACEAE (CRUCIFERAE) - MUSTARD FAMILY
	USDA 5. CANDYTUFT

	113-78	Seed from Smith College. Garden collected.

Ilex aquifolium L. AQUIFOLIACEAE - HOLLY FAMILY
	USDA 7. ENGLISH HOLLY

	148-82	Seed from Institut for dendrologi og planteskoledrift Norges landbrukshogskole (pre-1986). Wild collected by unknown Stord (Island), Hordaland County, Norway.

Ilex collina Alexander AQUIFOLIACEAE - HOLLY FAMILY
	USDA 6. HOLLY

	188-89	Seed from Staff, The Morton Arboretum. Wild collected by Ross C. Clark on old road btwn. US 250 & powerline, on tributary to Shavers Fork, about 1 mile east of Cheat Mt. divide, Randolph County, West Virginia. Habitat: upland woods.

Ilex crenata Thunb. AQUIFOLIACEAE - HOLLY FAMILY
	USDA 6. JAPANESE HOLLY

	465-84	Plant from United States National Arboretum. Wild collected at Hokkaido University Arboretum, at Teshio Forest, Toikanbetsu, Horonobe-cho, Teshio-gun, Hokkaido Prefecture, Hokkaido Region, Japan.

Ilex decidua Walter AQUIFOLIACEAE - HOLLY FAMILY
	USDA 5. POSSUM-HAW

	411-25	Seed from The Morton Arboretum. Garden collected.
	368-38	Seed from Arnold Arboretum of Harvard University. Wild collected by Ernest J. Palmer site not noted.
	231-66	Plant from Simpson Orchard Co., Inc. Garden collected.
	341-76	Cutting from The Morton Arboretum. Garden collected.
	91-83	Seed from The Morton Arboretum Research Program. Wild collected, St. Francois County, Missouri.
	537-96	Seed from Staff, The Morton Arboretum. Wild collected by Peter J. van der Linden in Henry Gray Wildlife Management Area, White County, Arkansas. Habitat: edge of slough.
	1139-2004	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2004 Ozark Expedition. Wild collected at Cedar Hollow Resort on Table Rock Lake, Stone County, Missouri. Habitat: oak forest edge, shallow rocky dolomite gravel in rocky crevasses ca. 2 ft. above lake water level on 1-5% n-slope.
	1150-2004	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2004 Ozark Expedition. Wild collected Nine Stone Community Land Trust, Carroll County, Arkansas. Habitat: woodland edge, prairie soil, 1-5% n-slope.

Ilex glabra (L.) Gray AQUIFOLIACEAE - HOLLY FAMILY
	USDA 5. INKBERRY

	1200-2004	Cutting from The Morton Arboretum. From plant of known wild origin collected New Jersey Pine Barrens, along Rte. 539, Ocean County, New Jersey. Habitat: Bog.

Ilex longipes Chapm. ex Trel. AQUIFOLIACEAE - HOLLY FAMILY
	USDA 6 - 11. GEORGIA HOLLY

	664-63	Seed from Harvey Templeton Nursery. Wild collected Sand Mt., Flat Rock, Jackson County, Alabama.

Ilex macropoda Miq. AQUIFOLIACEAE - HOLLY FAMILY
	USDA 6. HOLLY

	131-2000	Seed from Chollipo Arboretum. Wild collected at Munsu-Ri, Mt. Chiri, Kurye County, South Cholla Province, Republic of Korea. Habitat: in valley.
	30-2001	Seed from Chollipo Arboretum. Wild collected on Mt. Chiri, North Cholla Province, Republic of Korea.

Ilex montana (Torr. & Gray) Gray AQUIFOLIACEAE - HOLLY FAMILY
	USDA 5. MOUNTAIN HOLLY, MOUNTAIN WINTERBERRY

	604-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected at White Rock Campground, Jefferson National Forest, Giles County, Virginia. Habitat: mixed forest in mesic cove, 10% n-facing slope dappled shade, clay loam over shale, fair organic layer.

Ilex opaca Aiton AQUIFOLIACEAE - HOLLY FAMILY
	USDA 6. AMERICAN HOLLY

	1-56	Seed from Joe Dvorak. Garden collected.
	152-82	Plant from Liston Pennington. Garden collected.
	168-84	Plant from Staff, The Morton Arboretum. Wild collected by Ross C. Clark in Daniel Boone National Forest on Rush Ridge south of Gray's Arch, Powell County, Kentucky. Habitat: pine-oak-heath community.
	78-99	Seed from United States National Arboretum. Wild collected in Blackwater Wildlife Refuge, Dorchester County, Maryland.

Ilex opaca 'Shannon Chiles' AQUIFOLIACEAE - HOLLY FAMILY
	USDA 6A. SHANNON CHILES AMERICAN HOLLY

	12-2001	Plant from Bernheim Arboretum and Research Forest The Isaac W. Bernheim Foundation. Garden collected.

Ilex verticillata 'Winter Gold' AQUIFOLIACEAE - HOLLY FAMILY
	USDA 9. WINTER GOLD COMMON WINTERBERRY

	484-2004	Plant from Beaver Creek Nursery, Inc. Garden collected.

Indigofera kirilowii Maxim. ex Palib. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 5. KOREAN INDIGO

	183-66	Plant from Bernheim Arboretum and Research Forest The Isaac W. Bernheim Foundation. Garden collected.
	596-83	Sucker from The Morton Arboretum. Garden collected.

Iris dichotoma Pall. (HERBACEOUS) IRIDACEAE - IRIS FAMILY
	USDA 5. VESPER IRIS

	433-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected in Chang Yu Gou (Long Valley), Song Shan Forest Preserve, Yanqing County, Beijing Shi Municipality, China (Zhonghua). Habitat: full sun on dry sites often found in cracks between boulders.

Jasminum fruticans L. OLEACEAE - OLIVE FAMILY
	USDA 8. EUROPEAN JASMINE

	113-83	Seed from Botanical Garden of the Academy of Sciences of Turkmen SSR. Wild collected in the Kopetdag mountains, Turkmen S.S.R., U.S.S.R. Habitat: mountains.

Juglans cinerea L. JUGLANDACEAE - WALNUT FAMILY
	USDA 3. BUTTERNUT, WHITE WALNUT

	228-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg Apple River, 1 1/2 mi. northeast of Elizabeth, Jo Daviess County, Illinois.
	1-92	Plant from The Morton Arboretum Research Program. Wild collected by Tom Sedlacek near the DuPage River, south of Maple Avenue about 0.25 miles west of Illinois Route 53 in Lisle, Du Page County, Illinois.
	234-95	Seed from Morton Arb. 1995 Iowa Seed Expedition. Wild collected by Edward Hedborn, The Morton Arboretum near Squaw and Onion Creeks on YMCA Outdoor Center adjacent to Spangler Labs, Story County, Iowa. Habitat: edge of small eroded ravine in moist woods.
	608-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected on Cahas Mt., Franklin County, Virginia.

Juglans major (Torr.) A.Heller JUGLANDACEAE - WALNUT FAMILY
	USDA 9. ARIZONA WALNUT

	473-32	Seed from County of Monroe Department of Parks. Garden collected.
	614-47	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Garden collected.

Juglans mandshurica Maxim. JUGLANDACEAE - WALNUT FAMILY
	USDA 5. MANCHURIAN WALNUT

	44-56	Seed from Barres Botanical Garden. Garden collected.
	801-57	Seed from Leningrad Botanical Garden. Garden collected.
	64-59	Seed from Main Botanical Garden of Kazakh Academy of Sciences. Garden collected.
	911-59	Seed from Copenhagen Botanical Garden. Garden collected.
	267-93	Graft from The Morton Arboretum. Garden collected.
	327-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Ping Shan, Heilongjiang Sheng Province, China (Zhonghua). Habitat: along moist ravine on edge of cutover woodland.
	334-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yong Xiu Gou (Valley with Beautiful Clouds), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: on steep rocky embankments.
	371-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. Wild collected, Changbai County, Jilin Province, China (Zhonghua). Habitat: on rocky slopes along stream on 10 degree south slope.

Juglans microcarpa Berland. JUGLANDACEAE - WALNUT FAMILY
	USDA 6. LITTLE WALNUT

	373-69	Seed from Staff, The Morton Arboretum. Wild collected by George H. Ware from Quartz Mountain State Park, Greer County, Oklahoma.
	511-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn 7 mi east of Coldwater, Comanche County, Kansas. Habitat: growing on a creek floodplain along US 160.

Juglans nigra L. JUGLANDACEAE - WALNUT FAMILY
	USDA 5. BLACK WALNUT

	554-29	Plant from Williard G. Bixby. Garden collected.
	681-29	Graft from Arnold Arboretum of Harvard University. Garden collected.
	572-30	Plant from Williard G. Bixby. Garden collected.
	587-30	Graft from C. C. Galloway. Garden collected.
	409-32	Graft from W. A. Creitz. Garden collected.
	1345-39	Plant from unknown. Unknown collected.
	411-42	Graft from Arnold Arboretum of Harvard University. Garden collected.
	292-61	Plant from Nut Tree Nurseries. Garden collected.
	643-64	Seed from Royal Botanic Gardens. Wild collected Muskoka area, Ontario Province, Canada.
	207-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg East edge of Elkhart, Logan County, Illinois. Habitat: Cemetery.
	552-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along Welch Road, Jo Daviess County, Illinois. Habitat: grazed pasture.
	401-83	Plant from The Morton Arboretum. Unknown collected.
	266-95	Seed from The Morton Arboretum. From plant of known wild origin collected by Peter J. van der Linden along the south side of the DuPage River, on grounds of The Morton Arboretum, Du Page County, Illinois. Habitat: base of n-facing slope on upper floodplain terrace.
	314-2000	Plant from Johnson's Nursery. Garden collected.
	550-2005	Plant from Schichtel's Nursery. Garden collected.
	78-U	Unknown from unknown. Unknown collected.

Juglans regia L. JUGLANDACEAE - WALNUT FAMILY
	USDA 6. ENGLISH WALNUT, CARPATHIAN WALNUT, PERSIAN WALNUT, MADEIRA WALNUT

	1256-58	Seed from Donald Zaun. Garden collected.
	1011-59	Plant from W. E. Bacon. Garden collected by Carth in the Carpathian Mountains, Europe.

Juncus effusus L. (HERBACEOUS) JUNCACEAE - RUSH FAMILY
	USDA 4. COMMON RUSH, SOFT RUSH

	929-2004	Plant from various commercial sources. Garden collected.

Juniperus chinensis 'Ames' CUPRESSACEAE - CYPRESS FAMILY
	USDA 3. AMES CHINESE JUNIPER

	394-48	Graft from Iowa State College. Garden collected.
	331-73	Cutting from The Morton Arboretum. Garden collected.

Juniperus chinensis 'Columnaris' CUPRESSACEAE - CYPRESS FAMILY
	USDA 3. COLUMNAR CHINESE JUNIPER, COLUMN CHINESE JUNIPER, UPRIGHT CHINESE JUNIPER

	533-39	Plant from Siebenthaler Nursery, The Siebenthaler Co. Garden collected.
	565-62	Graft from The Morton Arboretum. Garden collected.

Juniperus chinensis 'Iowa' CUPRESSACEAE - CYPRESS FAMILY
	USDA 3. IOWA CHINESE JUNIPER

	427-61	Graft from The Morton Arboretum. Garden collected.
	114-2006	Plant from P.P. & O. Nursery, LLC. Garden collected.
	215-2010	Plant from P.P. & O. Nursery, LLC. Garden collected.

Juniperus chinensis var. sargentii 'Viridis' CUPRESSACEAE - CYPRESS FAMILY
	USDA 4. GREEN SARGENT'S JUNIPER

	35-74	Cutting from Callaway Gardens. Garden collected.
	140-2006	Plant from Midwest Groundcovers. Garden collected.

Juniperus chinensis 'Sea Green' CUPRESSACEAE - CYPRESS FAMILY
	USDA 3. SEA GREEN CHINESE JUNIPER

	87-89	Plant from Klehm Nursery. Garden collected.

Juniperus chinensis 'Shoosmith' CUPRESSACEAE - CYPRESS FAMILY
	USDA 3. SHOOSMITH CHINESE JUNIPER

	605-60	Graft from Wm. T. Gotelli. Garden collected.

Juniperus communis ssp. communis CUPRESSACEAE - CYPRESS FAMILY
	USDA 2. COMMON JUNIPER

	112-2000	Seed from Skogis Dendrologiska Forening. Wild collected at Umea, Vasterbotten County, Sweden. Habitat: in forest.

Juniperus formosana Hayata CUPRESSACEAE - CYPRESS FAMILY
	USDA 9. FORMOSA JUNIPER

	2102-24	Graft from Arnold Arboretum of Harvard University. Garden collected.

Juniperus oxycedrus L. CUPRESSACEAE - CYPRESS FAMILY
	USDA 9. PRICKLY JUNIPER

	383-73	Cutting from Hillier & Sons Nursery. Garden collected.
	309-99	Cutting from The Morton Arboretum. Garden collected.

Juniperus procera Hochst. ex Endl. CUPRESSACEAE - CYPRESS FAMILY
	USDA 9. AFRICAN JUNIPER

	472-74	Cutting from Royal Botanic Gardens Kew. Garden collected.

Juniperus procumbens (Siebold ex Endl.) Miq. CUPRESSACEAE - CYPRESS FAMILY
	USDA 4. JAPANESE GARDEN JUNIPER

	314-53	Plant from Joseph Cudahy. Garden collected.
	96-69	Plant from D. Hill Nursery Co. Garden collected.
	329-80	Cutting from The Morton Arboretum. Garden collected.

Juniperus procumbens 'Nana' CUPRESSACEAE - CYPRESS FAMILY
	USDA 4. DWARF JAPANESE GARDEN JUNIPER

	951-58	Graft from Wm. T. Gotelli. Garden collected.

Juniperus pseudosabina Fisch. & C.A.Mey. CUPRESSACEAE - CYPRESS FAMILY
	USDA 6. FALSE SAVIN JUNIPER

	504-80	Seed from Botanical Garden of the Uzbek Academy of Sciences. Garden collected.

Juniperus sabina L. CUPRESSACEAE - CYPRESS FAMILY
	USDA 3. SAVIN JUNIPER

	528-72	Cutting from Morden Research Station, Research Branch, Canada Agriculture. Garden collected.
	7-85	Cutting from The Morton Arboretum. Garden collected.

Juniperus sabina 'Monna' CUPRESSACEAE - CYPRESS FAMILY
	USDA 3. CALGARY CARPETÒ

	155-2000	Plant from Monrovia Nursery Co. Garden collected.

Juniperus scopulorum Sarg. CUPRESSACEAE - CYPRESS FAMILY
	USDA 6. ROCKY MOUNTAIN JUNIPER

	935-80	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn N. wall of Tensleep Canyon, N. of US l6, Washakie County, Wyoming. Habitat: Ravine.

Juniperus turkestanica Kom. CUPRESSACEAE - CYPRESS FAMILY
	USDA 6. TURKESTAN JUNIPER

	50-92	Seed from Research Institute of Ecology and Botany Hungarian Academy of Sciences Botanical Garden. Wild collected in Issyk-Ata Valley in the Kirghiz-Alatoo Range of the Tien Shan Mountains, Kyrgyz Republic. Habitat: rocky granite slope in bush & open spruce/juniper forest.

Juniperus virginiana 'Canaertii' CUPRESSACEAE - CYPRESS FAMILY
	USDA 2. CANAERT EASTERN RED-CEDAR

	1250-24	Plant from H. Kohankie & Son. Garden collected.
	84-31	Graft from The Morton Arboretum. Garden collected.
	510-78	Plant from The Morton Arboretum Research Program. Garden collected.
	88-94	Plant from Western DuPage Landscaping. Garden collected.

Juniperus virginiana 'Cupressifolia' CUPRESSACEAE - CYPRESS FAMILY
	USDA 2. HILLSPIRE EASTERN RED-CEDAR, CYPRESS-LEAVED EASTERN RED-CEDAR

	436-61	Graft from The Morton Arboretum. Garden collected.

Juniperus virginiana 'Pendula' CUPRESSACEAE - CYPRESS FAMILY
	USDA 4. WEEPING EASTERN RED-CEDAR

	98-45	Graft from The Morton Arboretum. Garden collected.
	617-60	Graft from Wm. T. Gotelli. Garden collected.

Juniperus virginiana 'Silver Spreader' CUPRESSACEAE - CYPRESS FAMILY
	USDA 2. SILVER SPREADER EASTERN RED-CEDAR

	40-74	Cutting from Callaway Gardens. Garden collected.
	310-99	Cutting from The Morton Arboretum. Garden collected.

Juniperus virginiana 'Triomphe d'Angers' CUPRESSACEAE - CYPRESS FAMILY
	USDA 8. TRIOMPHE D'ANGERS EASTERN RED-CEDAR

	626-61	Graft from The Morton Arboretum. Garden collected.

Kerria japonica (L.) DC. ROSACEAE - ROSE FAMILY
	USDA 5. JAPANESE KERRIA

	84-92	Plant from Jewell Nurseries Inc. Garden collected.
	18-98	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected near Kamikuishiki village, Nishiyatsushiro-gun, west of Tokyo, Yamanashi-ken Prefecture, Chubu Region, Japan.

Laburnum alpinum (Mill.) Bercht. & J.Presl FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 5. SCOTS LABURNUM, SCOTCH BEAN TREE, SCOTCH LABURNUM

	209-78	Seed from Botanischer Garten der Johann Wolfgang Goethe-Universitat. Garden collected.

Laburnum anagyroides Medik. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 6. COMMON LABURNUM, GOLDEN CHAIN

	81-79	Seed from Jardin Botanique. Wild collected, Haute-Savoie Department, France.
	68-88	Seed from Botanic Garden of Natural Science Faculty of Komensky University. Wild collected Carpatican occidentale, Male Karpaty, Bratislava- Mlynska dolina, Czechoslovakia.
	79-93	Seed from Botanischer Garten der Friedrich-Schiller-Universitat Institut fur spezielle Botanik. Wild collected near Jena, Thuringen State, Germany.

Larix decidua 'Pendula' PINACEAE - PINE FAMILY
	USDA 2. WEEPING EUROPEAN LARCH

	669-57	Graft from Holden Arboretum. Garden collected.

Larix gmelinii (Rupr.) Kuzen. PINACEAE - PINE FAMILY
	USDA 2. DAHURIAN LARCH

	2551-27	Plant from H. J. Zack Co. Garden collected.
	2169-29	Plant from Boyce Thompson Institute. Garden collected.
	296-81	Seed from Chinese Academy of Forestry, Research Institute of Forestry. Wild collected northeastern section, China (Zhonghua). Habitat: temperate regions.

Larix gmelinii var. japonica (Regel) Pilg. PINACEAE - PINE FAMILY
	USDA 3. KURIL LARCH

	46-56	Seed from Barres Botanical Garden. Garden collected.

Larix gmelinii var. olgensis (Henry) Ostenf. & Syrach PINACEAE - PINE FAMILY
	USDA 4. OLGA BAY LARCH

	297-81	Seed from Chinese Academy of Forestry, Research Institute of Forestry. Wild collected northeastern section, China (Zhonghua). Habitat: cold temperate region.
	270-86	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected northeastern section, China (Zhonghua). Habitat: mountains.
	91-87	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected northeastern section, China (Zhonghua). Habitat: mountains.
	329-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected from a naturally occurring seed plantation on Xaio Bei Forest Experimental Station, at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua).
	325-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. Wild collected, Changbai County, Jilin Province, China (Zhonghua). Habitat: along disturbed roadside on 60 degree south slope.
	582-2000	Seed from Morris Arboretum of the University of Pennsylvania. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition from a naturally occurring seed plantation on Xaio Bei Forest Experimental Station, at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua).

Larix gmelinii var. principis-rupprechtii (Mayr) Pilg. PINACEAE - PINE FAMILY
	USDA 4. PRINCE RUPPRECHT'S LARCH

	240-24	Seed from Joseph Hers. Wild collected site not noted, China (Zhonghua).
	301-90	Seed from Staff, The Morton Arboretum. Wild collected near Pangquangou, Shanxi Province, China (Zhonghua). Habitat: in upland spruce-larch-poplar-birch forest.
	321-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Wild collected near Panquangou Hotel, Panquangou, Heng Jian Zhen, Jiaocheng County, Shanxi Province, China (Zhonghua). Habitat: spruce-larch-poplar moist mesic woods on 30 deg. n-facing slope in rich moist organic soil above w-running stream.

Larix laricina (Du Roi) K.Koch PINACEAE - PINE FAMILY
	USDA 1. TAMARACK, AMERICAN LARCH, EASTERN LARCH, HACKMATACK

	252-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg northwest of Volo in Volo Bog, Lake County, Illinois. Habitat: bog.

Lavandula angustifolia Mill. LAMIACEAE (LABIATAE) - MINT FAMILY
	USDA 6. LAVENDER, ENGLISH LAVENDER

	4-43	Seed from Beatrix Farrand. Garden collected.
	589-79	Cutting from The Morton Arboretum. Garden collected.
	158-80	Cutting from The Morton Arboretum. Garden collected.
	416-84	Cutting from The Morton Arboretum. Garden collected.

Ledum palustre L. ERICACEAE - HEATH FAMILY
	USDA 2. CRYSTAL-TEA, WILD-ROSEMARY

	299-99	Seed from Botanical Garden of the University of Joensuu. Wild collected by unknown in Pohjois-Karjala biogeographical province, Lieska, Ruunaa, Mattila, Siikalahti, Finland. Habitat: on side of a shore swamp.

Leitneria floridana Chapm. LEITNERIACEAE - CORKWOOD FAMILY
	USDA 5. CORKWOOD

	258-33	Plant from Ralph C. McSherry. Garden collected.
	260-76	Plant from Staff, The Morton Arboretum. Wild collected by William J. Hess near Datto, Clay County, Arkansas.
	261-76	Plant from Staff, The Morton Arboretum. Wild collected by William J. Hess near Neelyville, Ripley County, Missouri.

Lespedeza bicolor Turcz. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 5. SHRUB BUSH-CLOVER

	310-23	Seed from Joseph Hers. Wild collected site not noted, China (Zhonghua).
	219-62	Seed from U.S.D.A., Soil Conservation Service Plant Materials Center. Garden collected.
	549-79	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Unknown collected.
	597-80	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected Peking, China (Zhonghua).
	152-92	Cutting from The Morton Arboretum. Garden collected by Joseph Hers site not noted, China (Zhonghua).
	330-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected above Jiang Po Lake, at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: shrub community on rocky cliff.

Leucanthemum x superbum 'Crazy Daisy' (HERBACEOUS) ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 4. CRAZY DAISY SHASTA DAISY

	125-2003	Plant from various commercial sources. Garden collected.

Leucothoe fontanesiana (Steud.) Sleumer ERICACEAE - HEATH FAMILY
	USDA 5. DOG HOBBLE, SWEETBELLS

	32-42	Plant from Fairview Evergreen Nurseries, Inc. Garden collected.

Ligustrum amurense Carriere OLEACEAE - OLIVE FAMILY
	USDA 3. AMUR PRIVET

	89-94	Plant from Western DuPage Landscaping. Garden collected.

Ligustrum obtusifolium Siebold & Zucc. OLEACEAE - OLIVE FAMILY
	USDA 3. BORDER PRIVET

	1334-58	Cutting from The Morton Arboretum. Garden collected.
	64-81	Plant from United States National Arboretum. Wild collected along a mountain road above Utagi village on Dogo Island, Shimane-ken Prefecture, Chugoku Region, Japan.

Ligustrum tschonoskii Decne. OLEACEAE - OLIVE FAMILY
	USDA 6. SUGAWA PRIVET

	684-79	Cutting from The Morton Arboretum. From plant of known wild origin collected Mt. Hayachine, Iwate Prefecture, Tohoku-chiho Region, Japan.

Ligustrum vulgare L. OLEACEAE - OLIVE FAMILY
	USDA 5. EUROPEAN PRIVET

	59-74	Plant from United States National Arboretum. Wild collected on Mt. Strakinjscica near Krapina in north Croatia, Croatia Republic, Yugoslavia.
	259-83	Seed from Botanic Garden of Natural Science Faculty of Komensky University. Wild collected Male Karpaty, Bratislava, Horsky Park, West Slovakia Region, Slovak S.S.R., Czechoslovakia.

Lilium monadelphum M.Bieb. (HERBACEOUS) LILIACEAE - LILY FAMILY
	USDA 5. CAUCASIAN LILY

	427-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 Republic of Georgia Expedition. Wild collected coll. area G16-5, Georgia.
	74-2001	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 Republic of Georgia Contract Collection. Garden collected.

Liquidambar formosana Hance HAMAMELIDACEAE - WITCH-HAZEL FAMILY
	USDA 7. FORMOSAN SWEET-GUM, FORMOSAN-GUM

	244-2004	Seed from Shanghai Botanic Garden. Wild collected on Mt. Heng, Hunan Province, China (Zhonghua). Habitat: sparse forest along roadside.

Liquidambar orientalis Mill. HAMAMELIDACEAE - WITCH-HAZEL FAMILY
	USDA 8. ORIENTAL SWEET-GUM, ORIENTAL SWEETGUM, STORAX

	16-2004	Seed from Okologisch Botanischer Garten Universitat Bayreuth (Ecologic Botanic Garden of the University of Bayreuth). Wild collected by unknown Dalaman (city), Bucht bei Gocek (bay at Gocek), Mugla Province, Aegean Region, Turkey.

Lonicera alpigena L. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. ALPINE HONEYSUCKLE

	670-46	Seed from Central Experimental Farm Botanical Garden and Arboretum Ottawa Research Station, Ornamentals Section. Garden collected.
	100-82	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected, Hte.-Savoie Department, France.

Lonicera altmannii Regel & Schmalh. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 5. TURKESTAN HONEYSUCKLE

	167-90	Seed from Botanical Garden of the Uzbek Academy of Sciences. Wild collected Soviet Central Asia, U.S.S.R.
	386-2005	Cutting from The Morton Arboretum. From plant of known wild origin collected Soviet Central Asia, U.S.S.R.

Lonicera canadensis W.Bartram CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 2. AMERICAN FLY-HONEYSUCKLE

	3-90	Seed from Montreal Botanic Garden. Wild collected eastern section, Canada. Habitat: "in sylvis humosis".

Lonicera caprifolium L. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. ITALIAN WOODBINE

	201-83	Seed from Bereich Botanik und Arboretum des Museums fur Naturkunde der Humboldt-Universitat zu Berlin. Wild collected Kyffhauser, Bad Frankenhausen/Rr Artern, Halle District, German Democratic Republic.
	255-85	Cutting from The Morton Arboretum. Garden collected.

Lonicera chrysantha Turcz. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 4. CORALLINE HONEYSUCKLE

	274-90	Seed from Staff, The Morton Arboretum. Wild collected in the Feng lin Preserve in the Wu ying division of the town of Yichun, Heilongjiang Sheng Province, China (Zhonghua). Habitat: brushy trail edge in forest.
	305-90	Seed from Staff, The Morton Arboretum. Wild collected near Pangquangou, Shanxi Province, China (Zhonghua). Habitat: in an open disturbed area near a creek.

Lonicera coerulea L. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 2. BLUE-FRUITED HONEYSUCKLE

	575-80	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected, Haute Savoie Department, France.

Lonicera demissa Rehder CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. HONEYSUCKLE

	231-83	Seed from Aritaki Arboretum. Wild collected Oshimo-Mura near Mt. Fuji, Yamanashi-ken Prefecture, Chubu Region, Japan.

Lonicera ferdinandii Franch. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. MONGOLIAN HONEYSUCKLE

	295-79	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Garden collected.
	240-84	Cutting from The Morton Arboretum. Garden collected.
	18-2002	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected Yanggetai, Pangquangou, Shanxi Province, China (Zhonghua). Habitat: among shrubs.

Lonicera flava Sims CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. YELLOW HONEYSUCKLE

	1131-2004	Plant from Midwest Plant Collecting Collaborative (MWPCC) 2004 Ozark Expedition. Wild collected along Buffalo River Trail between County Road 25 and Buffalo River in Boxley Valley, Buffalo National River, Newton County, Arkansas. Habitat: beech-oak-hickory foerest in rich organic sand over bedrock in dense deciduous shade on 60% n-slope.

Lonicera fragrantissima Lindl. & Paxton CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 5. WINTER HONEYSUCKLE

	1290-23	Plant from F & F Nurseries. Garden collected.
	729-40	Cutting from The Morton Arboretum. Garden collected.
	451-80	Cutting from The Morton Arboretum. Garden collected.
	368-84	Division from The Morton Arboretum. Garden collected.
	87-U	Unknown from unknown. Unknown collected.

Lonicera x heckrottii Rehder CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. GOLDFLAME HONEYSUCKLE, EVERBLOOMING HONEYSUCKLE

	176-90	Plant from T & Z Nursery. Garden collected.

Lonicera henryi Hemsl. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 5. TIBETAN HONEYSUCKLE

	477-82	Plant from Cary Arboretum of the New York Botanical Garden. Wild collected by 1980 Sino-American Botanical Expedition vicinity of Duanjiangping Shennongjia Forest District, Hubei Province, China (Zhonghua).
	236-89	Cutting from The Morton Arboretum. From plant of known wild origin collected by vicinity of Duanjiangping Shennongjia Forest District, Hubei Province, China (Zhonghua).

Lonicera iberica M.Bieb. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. ARMENIAN HONEYSUCKLE

	262-79	Seed from Botanical Garden of Academy of Sciences of Armenian S.S.R. Wild collected Kanaker near Yerevan (Erevan), Armenian S.S.R., U.S.S.R. Habitat: mesic forests.

Lonicera involucrata (Richardson) Banks ex Spreng. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. TWINBERRY

	392-86	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg north of Red Mountain Pass on west side of US 550, Ouray County, Colorado. Habitat: subalpine meadow.

Lonicera korolkowii Stapf CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. BLUE-LEAVED HONEYSUCKLE

	254-78	Seed from Botanical Garden of the Moscow Lomonosov State University. Wild collected Dzhungarskiy Alatau Mtns., Kazakh S.S.R., U.S.S.R.
	44-82	Seed from Botanical Garden of the Botanical Institute. Wild collected, U.S.S.R.

Lonicera ledebourii Eschsch. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. CALIFORNIA HONEYSUCKLE

	345-76	Cutting from The Morton Arboretum. Garden collected.

Lonicera maximowiczii (Rupr.) Maxim. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 5. MAXIMOWICZ'S HONEYSUCKLE, MAXIMOWICZ HONEYSUCKLE

	676-80	Seed from Tallinn Botanical Garden of the Estonian Academy of Sciences. Wild collected in the Ussuri region, Russian S.F.S.R., U.S.S.R.

Lonicera microphylla Willd. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 5. LITTLE-LEAVED HONEYSUCKLE, LITTLELEAF HONEYSUCKLE

	20-82	Seed from Botanical Garden of the Uzbek Academy of Sciences. Wild collected in Central Asia, U.S.S.R.

Lonicera x minutiflora Zabel CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. BUNCHBERRY HONEYSUCKLE

	353-85	Cutting from The Morton Arboretum. Garden collected.

Lonicera morrowi Gray CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. MORROW'S HONEYSUCKLE, MORROW HONEYSUCKLE

	210-61	Plant from United States National Arboretum. Wild collected in Mutsu Province, Aomori Prefecture, Tohoku-chiho Region, Japan.
	237-89	Cutting from The Morton Arboretum. Garden collected.

Lonicera x muscaviensis Rehder CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 5. MUSCOVY HONEYSUCKLE

	259-85	Cutting from The Morton Arboretum. Garden collected.

Lonicera myrtillus Hook.f. & Thomson CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. MYRTLE HONEYSUCKLE

	375-82	Cutting from The Morton Arboretum. Garden collected.

Lonicera nigra L. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. HONEYSUCKLE

	260-83	Seed from Botanic Garden of Natural Science Faculty of Komensky University. Wild collected Zapadne Tatry, Jalovecka dolina, West Slovakia Region, Slovak S.S.R., Czechoslovakia.

Lonicera periclymenum L. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. WOODBINE

	626-80	Seed from Institute fur Allgemeine Botanik und Botanischer Garten. Wild collected Lubeck-Israelsdorf, Schleswig-Holstein State, Federal Republic of Germany.

Lonicera praeflorens Batalin CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 5. EARLY HONEYSUCKLE

	915-42	Plant from Arnold Arboretum of Harvard University. Garden collected.
	1055-59	Cutting from The Morton Arboretum. Garden collected.
	376-82	Cutting from The Morton Arboretum. Garden collected.

Lonicera quinquelocularis Hardw. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. MISTLETOE HONEYSUCKLE

	63-58	Seed from Staff, The Morton Arboretum. Garden collected.
	264-85	Cutting from The Morton Arboretum. Garden collected.

Lonicera ruprechtiana Regel CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. MANCHURIAN HONEYSUCKLE

	677-80	Seed from Tallinn Botanical Garden of the Estonian Academy of Sciences. Wild collected in the Ussuri region of eastern Siberia, Russian S.F.S.R., U.S.S.R.

Lonicera sempervirens L. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 8. TRUMPET HONEYSUCKLE

	134-84	Seed from Bowman's Hill State Wildflower Preserve, Washington Crossing State Park. Wild collected in Washington Crossing Historical Park from Bowman's Hill native stands, Pennsylvania.
	402-88	Plant from T & Z Nursery. Garden collected.

Lonicera standishii Jacques CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. STANDISH'S HONEYSUCKLE

	445-86	Cutting from The Morton Arboretum. Garden collected.

Lonicera syringantha Maxim. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 5. LILAC HONEYSUCKLE

	199-70	Cutting from The Morton Arboretum. Garden collected.
	20-78	Cutting from The Morton Arboretum. Garden collected.
	323-90	Cutting from The Morton Arboretum. Garden collected.

Lonicera trichosantha Bureau & Franch. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 6. SLENDER HONEYSUCKLE

	143-65	Cutting from Arboretum des Barres et Fruticetum Vilmorinianum. Garden collected.

Lonicera villosa (Michx.) Roem. & Schult. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 2. MOUNTAIN FLY HONEYSUCKLE

	258-93	Plant from Reeseville Ridge Nursery. Wild collected, Marinette County, Wisconsin.

Lonicera x xylosteoides 'Clavey's Dwarf' CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 5. CLAVEY'S DWARF HONEYSUCKLE

	423-65	Plant from Willis Nursery Co., A. Willis & Co. Garden collected.
	58-96	Plant from Sjulin Nurseries, Inc. Garden collected.
	225-2006	Plant from Wilson Nurseries, Inc. Garden collected.
	88-U	Unknown from unknown. Unknown collected.

Lonicera xylosteum L. CAPRIFOLIACEAE - HONEYSUCKLE FAMILY
	USDA 5. EUROPEAN FLY-HONEYSUCKLE

	117-78	Seed from Botanic Garden of Natural Science Faculty of Komensky University. Wild collected Podlesok, Stratenska Hornatina, Czechoslovakia.
	628-79	Seed from Main Botanical Garden. Wild collected, Russian S.F.S.R., U.S.S.R.

Lycium chinense Mill. SOLANACEAE - NIGHTSHADE FAMILY
	USDA 6. CHINESE MATRIMONY VINE

	598-80	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected Peking, China (Zhonghua).

Lyonia ligustrina (L.) DC. ERICACEAE - HEATH FAMILY
	USDA 4. MALEBERRY

	135-84	Seed from Bowman's Hill State Wildflower Preserve, Washington Crossing State Park. Wild collected in Washington Crossing State Historical Park from Bowman's Hill native stands, Buck County, Pennsylvania.
	34-96	Seed from Mount Holyoke College Botanic Garden, Dept. of Buildings and Grounds, Mount Holyoke College. Wild collected by unknown at Mt. Warner, Hadley, Hampshire County, Massachusetts.
	15-99	Seed from Mount Holyoke College Botanic Garden, Dept. of Buildings and Grounds, Mount Holyoke College. Wild collected by Thomas E. Clark, Mount Holyoke College Botanic Garden, Dept. of Buildings and Grounds, Mount Holyoke College in South Hadley, Massachussetts.

Lysimachia clethroides Duby (HERBACEOUS) PRIMULACEAE - PRIMROSE FAMILY
	USDA 4. GOOSE-NECKED LOOSESTRIFE, CLETHRA LOOSESTRIFE, GOOSENECK LOOSESTRIFE

	757-2004	Plant from various commercial sources. Garden collected.

Maackia fauriei (H.Lev.) Takeda FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 5. KOREAN MAACKIA

	2-29	Seed from Arnold Arboretum of Harvard University. From plant of known wild origin collected by Ernest H. Wilson, Arnold Arboretum of Harvard University, Republic of Korea.
	576-2001	Cutting from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson, Republic of Korea.
	219-2002	Cutting from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson, Republic of Korea.
	99-2003	Cutting from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson, Republic of Korea.

Maclura pomifera (Raf.) C.K.Schneid. MORACEAE - MULBERRY FAMILY
	USDA 5. OSAGE-ORANGE, HEDGE-APPLE

	340-31	Plant from Willis Nursery Co., A. Willis & Co. Garden collected.
	808-54	Plant from The Morton Arboretum. Garden collected.
	188-75	Plant from Smith Nursery Co. Garden collected.

Magnolia acuminata L. MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 4. CUCUMBERTREE

	712-28	Plant from Corn Belt Nursery and Forestry Association. Garden collected.
	1046-35	Plant from Cole Nursery Co. Garden collected.
	168-40	Plant from Kallay Brothers Company. Garden collected.
	1339-40	Seed from University of Kentucky. Garden collected.
	133-61	Plant from The Morton Arboretum. Garden collected.
	287-64	Plant from Kallay Brothers Company. Garden collected.
	186-89	Seed from Staff, The Morton Arboretum. Wild collected by Ross C. Clark summit of Cheat Mountain ridge, about 0.5 miles north of US highway 250, Randolph County, West Virginia. Habitat: mountains.
	35-91	Seed from University of Guelph Arboretum. Wild collected near Fenwick, Niagara Region, Ontario Province, Canada.
	246-94	Plant from Klehm Nursery. Garden collected.
	219-2000	Plant from Beaver Creek Nursery, Inc. Garden collected.
	615-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected on Cahas Mt., Franklin County, Virginia.
	665-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected along Blue Ridge Parkway north of marker 417, Haywood County, North Carolina. Habitat: 15 deg. e-facing slope in 3/4 sun, gritty, loam, well-drained, moist bottom of slope.

Magnolia cordata Michx. MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 6. YELLOW MAGNOLIA

	639-59	Graft from Callaway Gardens. Garden collected.
	268-93	Graft from The Morton Arboretum. Garden collected.

Magnolia denudata Desr. MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 6. YULAN MAGNOLIA

	216-37	Plant from H. Kohankie & Son. Garden collected.
	570-65	Graft from Harold Baumann. Garden collected.
	449-83	Cutting from The Morton Arboretum. Garden collected.
	274-95	Seed from North America-China Plant Exploration Consortium (NACPEC). Wild collected by Ciu Tiecheng Xian Transport University, Shaanxi Province, China (Zhonghua).
	337-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Garden collected Gao Shi, Yang Cheng Xian, Yang Cheng County, Shanxi Province, China (Zhonghua). Habitat: backyard garden of house next to a small stream in a small village.
	47-2005	Plant from The Morton Arboretum Research Program. Garden collected.

Magnolia kobus DC. MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 5. JAPANESE MAGNOLIA

	45-2005	Plant from Staff, The Morton Arboretum. Garden collected.
	104-2006	Plant from The Morton Arboretum Research Program. Garden collected.

Magnolia kobus var. borealis Sarg. MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 4. NORTHERN JAPANESE MAGNOLIA

	673-46	Seed from Gradina Botanica a Universitatii din Cluj-Napoca. Garden collected.
	531-52	Seed from Arnold Arboretum of Harvard University. Garden collected.
	663-54	Cutting from The Morton Arboretum. Garden collected.
	798-54	Seed from The Morton Arboretum. Garden collected.
	346-61	Plant from Edward H. Scanlon & Assoc. Garden collected.
	326-63	Graft from Highland Botanical Park, County of Monroe Department of Parks. Garden collected.
	105-64	Seed from Kobe Municipal Arboretum. Garden collected.

Magnolia liliflora Desr. MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 6. PURPLE MAGNOLIA, ORCHID MAGNOLIA

	486-2000	Plant from The Holden Arboretum. Garden collected.
	487-2000	Plant from The Holden Arboretum. Garden collected.

Magnolia officinalis Rehder & E.H.Wilson MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 8. MAGNOLIA

	224-2000	Seed from SP Cover-TMS. Wild collected, Jiangxi Province, China (Zhonghua).

Magnolia pyramidata W.Bartram MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 8. PYRAMIDAL MAGNOLIA

	47-94	Plant from Philip Seitner. Garden collected.

Magnolia salicifolia (Siebold & Zucc.) Maxim. MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 6. ANISE MAGNOLIA

	515-50	Plant from Hooks Nursery. Garden collected.
	347-61	Plant from Edward H. Scanlon & Assoc. Garden collected.
	327-63	Graft from Arnold Arboretum of Harvard University. Garden collected.
	268-65	Plant from Edward H. Scanlon & Assoc. Garden collected.

Magnolia salicifolia 'Iufer' MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 6. IUFER ANISE MAGNOLIA

	1118-2004	Plant from Ridgecrest Nursery and Gardens. Garden collected.

Magnolia sieboldii K.Koch MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 7. OYAMA MAGNOLIA

	25-91	Seed from Kyung-ku Shim, Sung Kyun Kwan University. Unknown collected.
	352-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. From plant of known wild origin collected 100 km southeast of Shenyang near Benxi, Liaoning Province, China (Zhonghua).

Magnolia x soulangiana Soul.-Bod. MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 5. SAUCER MAGNOLIA

	2202-25	Plant from Naperville Nurseries. Unknown collected.
	91-54	Plant from John Vermeulen. Garden collected.
	505-58	Plant from Matt Tures and Sons Nursery. Garden collected.
	927-61	Plant from The Morton Arboretum. Garden collected.
	260-64	Plant from Cole Nursery Co. Garden collected.
	175-88	Plant from King Nursery. Garden collected.
	178-92	Plant from Matt Tures Sons Nursery. Garden collected.

Magnolia x soulangiana 'Alexandrina' MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 5. ALEXANDRINA SAUCER MAGNOLIA

	629-2004	Plant from King Nursery. Garden collected.

Magnolia sprengeri Pamp. MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 9. SPRENGER'S MAGNOLIA

	246-2004	Seed from Shanghai Botanic Garden. Wild collected on Mt. Heng, Hunan Province, China (Zhonghua). Habitat: in sparse forest on roadside.

Magnolia tripetala L. MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 5. UMBRELLA MAGNOLIA

	219-37	Plant from H. Kohankie & Son. Garden collected.
	236-42	Plant from Boyd Brothers Nurseries. Garden collected.
	1051-59	Plant from unknown. Garden collected.
	1043-65	Seed from Nichols Arboretum University of Michigan. Garden collected.
	240-98	Seed from Ross C. Clark, Eastern Kentucky University. Wild collected along Busbee Road near the town of Biltmore Forest, Buncombe County, North Carolina. Habitat: low woods along a stream.
	607-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected on Mt. Cahas, Franklin County, Virginia.
	164-2001	Seed from The North Carolina Arboretum The University of North Carolina. Wild collected by unknown along the south side of I-40 near Pigeon River, Harmon Den exit, Haywood County, North Carolina.

Magnolia 'Yellow Bird' MAGNOLIACEAE - MAGNOLIA FAMILY
	USDA 5. YELLOW BIRD MAGNOLIA

	220-2000	Plant from Beaver Creek Nursery, Inc. Garden collected.

Mahonia piperiana Abrams BERBERIDACEAE - BARBERRY FAMILY
	USDA 7. PIPER'S GRAPE-HOLLY, PIPER GRAPE-HOLLY

	213-73	Seed from Carl S. English Jr. Wild collected in the Siskiyou Mountains, OR and CA.

Mahonia x wagneri (Jouin) Rehder BERBERIDACEAE - BARBERRY FAMILY
	USDA 8. WAGNER'S GRAPE-HOLLY, WAGNER GRAPE-HOLLY

	770-55	Graft from Highland Botanical Park, County of Monroe Department of Parks. Garden collected.

Malus 'Adams' ROSACEAE - ROSE FAMILY
	USDA 4. ADAMS CRABAPPLE

	128-64	Graft from The Morton Arboretum. Garden collected.
	34-84	Plant from Simpson Orchard Co., Inc. Garden collected.
	56-86	Plant from King Nursery. Garden collected.
	110-86	Plant from Simpson Orchard Co., Inc. Garden collected.
	112-90	Plant from The Morton Arboretum Research Program. Garden collected.
	814-2004	Plant from South Branch Nurseries, Inc. Garden collected.

Malus 'Adirondack' ROSACEAE - ROSE FAMILY
	USDA 4. ADIRONDACK CRABAPPLE

	50-93	Plant from The Morton Arboretum Research Program. Garden collected.
	411-2004	Plant from Bailey Nurseries, Inc. Garden collected.

Malus x arnoldiana (Rehder) Sarg. ROSACEAE - ROSE FAMILY
	USDA 5. ARNOLD CRABAPPLE

	516-39	Plant from H. Kohankie & Son. Garden collected.
	94-U	Unknown from unknown. Unknown collected.

Malus baccata (L.) Borkh. ROSACEAE - ROSE FAMILY
	USDA 2. SIBERIAN CRABAPPLE

	576-29	Plant from Boyce Thompson Institute. Garden collected.
	365-88	Plant from Holden Arboretum. Garden collected west side of Mohang, Cholla Pukto, Puan Gun, Sannae Myon, Tochong-re, Mohang, North Cholla Province, Republic of Korea. Habitat: dense thicket along & in rocky stream bed.
	366-88	Plant from Holden Arboretum. Wild collected by United States National Arboretum at Ongjin Gun, Taechong Myon, Taechong Island, Satan Dong, Twaeji Kojae, Kyonggi-do Province, Republic of Korea. Habitat: steep, rocky, southw-facing, cut-over slope among pines.
	308-90	Seed from Staff, The Morton Arboretum. Wild collected near Pangquangou, Shanxi Province, China (Zhonghua). Habitat: along a roadside through an upland forest.
	332-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Ping Shan, Heilongjiang Sheng Province, China (Zhonghua). Habitat: disturbed woodland, old field edge.
	333-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: disturbed woodland edge along stream.

Malus brevipes (Rehder) Rehder ROSACEAE - ROSE FAMILY
	USDA 6. DWARF NIPPON CRABAPPLE

	323-53	Plant from Inter-State Nursery Inc. Garden collected.
	203-84	Graft from The Morton Arboretum. Garden collected.

Malus 'Canary' ROSACEAE - ROSE FAMILY
	USDA 3B. CANARY CRABAPPLE

	77-2006	Plant from Simpson Nursery Co. Garden collected.

Malus 'Candymint Sargent' Patent 6606 ROSACEAE - ROSE FAMILY
	USDA 5. CANDYMINT SARGENT CRABAPPLE

	78-2006	Plant from Simpson Nursery Co. Garden collected.

Malus coronaria (L.) Mill. ROSACEAE - ROSE FAMILY
	USDA 5. WILD SWEET CRABAPPLE

	538-66	Graft from Highland Botanical Park, County of Monroe Department of Parks. Garden collected.
	182-92	Seed from Staff, The Morton Arboretum. Wild collected by Peter J. van der Linden near Merioneth Road in an area being subdivided for Lincolnshire housing development, Will County, Illinois. Habitat: clearing in upland oak woods.
	183-92	Seed from Staff, The Morton Arboretum. Wild collected by Peter J. van der Linden near Merioneth Road in an area being subdivided for Lincolnshire housing development, Will County, Illinois. Habitat: clearing in upland oak woods.
	42-97	Seed from The Holden Arboretum. Wild collected by unknown in the North Kingsville Sand Barrens, Ashtabula County, Ohio.

Malus 'Donald Wyman' ROSACEAE - ROSE FAMILY
	USDA 4. DONALD WYMAN CRABAPPLE

	42-83	Graft from The Morton Arboretum. Garden collected.
	43-83	Graft from The Morton Arboretum. Garden collected.
	392-83	Cutting from The Morton Arboretum. Garden collected.
	569-83	Cutting from The Morton Arboretum. Garden collected.
	570-83	Cutting from The Morton Arboretum. Garden collected.
	39-84	Plant from Simpson Orchard Co., Inc. Garden collected.
	87-90	Plant from The Morton Arboretum Research Program. Garden collected.
	90-94	Plant from Western DuPage Landscaping. Garden collected.
	333-2004	Cutting from The Morton Arboretum. Garden collected.

Malus floribunda Van Houtte ROSACEAE - ROSE FAMILY
	USDA 4. JAPANESE FLOWERING CRABAPPLE

	936-40	Graft from The Morton Arboretum. Garden collected.
	911-41	Graft from The Morton Arboretum. Garden collected.
	137-64	Graft from The Morton Arboretum. Garden collected.
	668-80	Plant from Matt Tures Sons Nursery. Garden collected.
	49-84	Plant from J. Frank Schmidt & Son Co. Garden collected.
	114-85	Plant from J. Frank Schmidt & Son Co. Garden collected.
	95-90	Plant from The Morton Arboretum Research Program. Garden collected.
	91-94	Plant from Western DuPage Landscaping. Garden collected.
	197-94	Plant from Klehm Nursery. Garden collected.
	284-97	Plant from King Nursery. Garden collected.

Malus fusca (Raf.) C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 6. OREGON CRABAPPLE

	267-94	Seed from Forest Farm Arboretum and Nursery. Wild collected, Josephine County, Oregon.
	400-2002	Cutting from The Morton Arboretum. Garden collected.

Malus halliana Koehne ROSACEAE - ROSE FAMILY
	USDA 6. HALL'S CRABAPPLE

	40-92	Seed from Shanghai Botanic Garden. Wild collected on Emei, Leshan, Qingchengshan, and Jinfoshan mountains and from Jiuzhaigou area, Sichuan Province, China (Zhonghua). Habitat: broad-leaved forest mountainy area.
	314-2003	Bud from The Morton Arboretum. From plant of known wild origin collected on Emei, Leshan, Qingchengshan, and Jinfoshan mountains and from Jiuzhaigou area, Sichuan Province, China (Zhonghua). Habitat: broad-leaved forest mountainy area.
	396-2004	Cutting from The Morton Arboretum. From plant of known wild origin collected on Emei, Leshan, Qingchengshan, and Jinfoshan mountains and from Jiuzhaigou area, Sichuan Province, China (Zhonghua). Habitat: broad-leaved forest mountainy area.

Malus 'Hargozam' ROSACEAE - ROSE FAMILY
	USDA 4. HARVEST GOLDÒ

	166-84	Plant from Lake County Nursery, Inc. (Lake County Nursery Exchange). Garden collected.
	93-85	Plant from Lake County Nursery, Inc. (Lake County Nursery Exchange). Garden collected.

Malus x heterophylla Spach ROSACEAE - ROSE FAMILY
	USDA 5. APPLE

	46-94	Seed from Metropolitan Toronto Zoo. Wild collected, Essex County, Ontario Province, Canada.

Malus honanensis Rehder ROSACEAE - ROSE FAMILY
	USDA 6. HONAN CRABAPPLE

	328-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Wild collected Ling Kong Shan Zhen, Qinyan County, Shanxi Province, China (Zhonghua). Habitat: heavily disturbed & grazed mesic pine-oak forest on 30 deg. e-facing slope in rocky clay (loess) soil.

Malus hupehensis (Pamp.) Rehder ROSACEAE - ROSE FAMILY
	USDA 5. TEA CRABAPPLE, CHINESE CRABAPPLE

	1154-56	Bud from The Morton Arboretum. Garden collected.
	46-83	Graft from The Morton Arboretum. Garden collected.
	560-83	Cutting from The Morton Arboretum. Garden collected.
	561-83	Cutting from The Morton Arboretum. Garden collected.
	107-86	Plant from Moller's Nursery Inc. Garden collected.
	85-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Dananzugou village 5 km. northeast of Maerkang, Maerkang County, Sichuan Province, China (Zhonghua). Habitat: south, partial shade, mountain valley.
	96-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Songang village 10 km. west of Maerkang, Maerkang County, Sichuan Province, China (Zhonghua). Habitat: 85 deg., e-facing, sunny cliff face.
	97-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Songang village 10 km. west of Maerkang, Maerkang County, Sichuan Province, China (Zhonghua). Habitat: 85 deg., e-facing, sunny cliff face.
	98-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Songang village 10 km. west of Maerkang, Maerkang County, Sichuan Province, China (Zhonghua). Habitat: 85 deg., e-facing, sunny cliff face.
	102-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Songang village 10 km. west of Maerkang, Maerkang County, Sichuan Province, China (Zhonghua). Habitat: 85 deg., e-facing, sunny cliff face.
	103-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Songang village 10 km. west of Maerkang, Maerkang County, Sichuan Province, China (Zhonghua). Habitat: 85 deg., e-facing, sunny cliff face.

Malus ioensis (Wood) Britton ROSACEAE - ROSE FAMILY
	USDA 2. PRAIRIE CRABAPPLE

	277-67	Graft from Arie F. den Boer. Garden collected.
	433-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along Leatherleaf Bog Trail in Moraine Hills State Park, Mc Henry County, Illinois. Habitat: old open field.
	95-U	Unknown from unknown. Unknown collected.

Malus kansuensis (Batalin) C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 5. GANSU CRABAPPLE

	194-84	Graft from The Morton Arboretum. Garden collected.
	866-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected in Lianhua Shan National Nature Reserve / Sha He Tan, Ling Tan Shen County, Gansu Province, China (Zhonghua). Habitat: mesic mixed conif./decid. forest along road edge on 15 deg nw-slope on rich organic loam.

Malus 'Liset' ROSACEAE - ROSE FAMILY
	USDA 4. LISET CRABAPPLE

	1069-57	Plant from Arie F. den Boer. Garden collected.
	610-58	Plant from Wayside Gardens. Garden collected.
	50-84	Plant from J. Frank Schmidt & Son Co. Garden collected.
	98-90	Plant from The Morton Arboretum Research Program. Garden collected.

Malus 'Lollizam' ROSACEAE - ROSE FAMILY
	USDA 4. LOLLIPOPÒ

	412-2004	Plant from Bailey Nurseries, Inc. Garden collected.

Malus 'Ormiston Roy' ROSACEAE - ROSE FAMILY
	USDA 4. ORMISTON ROY CRABAPPLE

	98-84	Plant from Boyer Nurseries and Orchards, Inc. Garden collected.

Malus 'Prairifire' ROSACEAE - ROSE FAMILY
	USDA 4. PRAIRIFIRE CRABAPPLE

	114-86	Plant from Simpson Orchard Co., Inc. Garden collected.
	24-2000	Plant from Craig Bergmann's Country Garden Perennial Farm & Garden Center. Garden collected.
	590-2005	Plant from Mariani Landscape/Design Build Maintenance. Garden collected.

Malus 'Pretty Marjorie' ROSACEAE - ROSE FAMILY
	USDA 6. PRETTY MARJORIE CRABAPPLE

	425-85	Bud from The Morton Arboretum. Garden collected.

Malus 'Professor Sprenger' ROSACEAE - ROSE FAMILY
	USDA 4. PROFESSOR SPRENGER CRABAPPLE

	52-83	Graft from The Morton Arboretum. Garden collected.
	563-83	Cutting from The Morton Arboretum. Garden collected.
	51-84	Plant from J. Frank Schmidt & Son Co. Garden collected.
	116-85	Plant from J. Frank Schmidt & Son Co. Garden collected.
	363-88	Plant from J. Frank Schmidt & Son Co. Garden collected.

Malus prunifolia (Willd.) Borkh. ROSACEAE - ROSE FAMILY
	USDA 4. PLUM-LEAVED CRABAPPLE

	278-67	Graft from The Morton Arboretum. Garden collected.
	246-88	Cutting from The Morton Arboretum. Garden collected.

Malus 'Purple Prince' Patent 8478 ROSACEAE - ROSE FAMILY
	USDA 4. PURPLE PRINCE CRABAPPLE

	49-93	Plant from The Morton Arboretum Research Program. Garden collected.
	194-2006	Plant from Klehm's Song Sparrow Farm and Nursery. Garden collected.

Malus x purpurea (Barbier) Rehder ROSACEAE - ROSE FAMILY
	USDA 5. PURPLE CRABAPPLE

	1184-56	Bud from The Morton Arboretum. Garden collected.

Malus 'Red Jade' Patent 1497 ROSACEAE - ROSE FAMILY
	USDA 4. RED JADE CRABAPPLE

	53-84	Plant from J. Frank Schmidt & Son Co. Garden collected.

Malus 'Robinson' ROSACEAE - ROSE FAMILY
	USDA 4. ROBINSON CRABAPPLE

	100-90	Plant from The Morton Arboretum Research Program. Garden collected.

Malus x robusta (Carriere) Rehder ROSACEAE - ROSE FAMILY
	USDA 3. CHERRY CRABAPPLE

	147-64	Graft from The Morton Arboretum. Garden collected.

Malus rockii Rehder ROSACEAE - ROSE FAMILY
	USDA 5. ROCK'S CRABAPPLE

	205-84	Graft from The Morton Arboretum. Garden collected.
	279-93	Graft from The Morton Arboretum. Garden collected.

Malus sargentii Rehder ROSACEAE - ROSE FAMILY
	USDA 5. SARGENT'S CRABAPPLE

	611-36	Plant from Cole Nursery Co. Garden collected.
	394-83	Cutting from The Morton Arboretum. Garden collected.
	57-84	Plant from J. Frank Schmidt & Son Co. Garden collected.
	91-95	Plant from Beeson's McHenry County Nursery, Inc. Garden collected.
	206-95	Plant from Klehm Nursery. Garden collected.

Malus 'Sentinel' ROSACEAE - ROSE FAMILY
	USDA 4. SENTINEL CRABAPPLE

	45-84	Plant from Simpson Orchard Co., Inc. Garden collected.
	101-90	Plant from The Morton Arboretum Research Program. Garden collected.

Malus sieboldii (Regel) Rehder ROSACEAE - ROSE FAMILY
	USDA 6. TORINGO CRABAPPLE

	322-88	Bud from The Morton Arboretum. Garden collected.
	367-88	Plant from Holden Arboretum. Wild collected by United States National Arboretum at Puan Gun, Sannae Myon, Tochong-ri, Mohang, North Cholla Province, Republic of Korea. Habitat: roadside thicket in cut-over area, sun, nw-facing slope.
	368-88	Plant from Holden Arboretum. Wild collected by United States National Arboretum along a road between Sonjin Dong and Kuju Dong, Ongjin Gun, Taechong Myon, Taechong Island, Kyonggi-do Province, Republic of Korea. Habitat: rocky, cut-over hillside in sun.
	19-98	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected near Nasu town, Nasu-gun, north of Tokyo, Tochigi Prefecture, Kanto Region, Japan.
	34-2000	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Akagi Village north of Tokyo, Seta County, Gumma-ken Prefecture, Kanto Region, Japan.
	62-2000	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Naganohara Town west of Tokyo, Agatsuma County, Gumma-ken Prefecture, Kanto Region, Japan.
	104-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Mao Xian Ping town 6 km. ne of Maoxian, Sichuan Province, China (Zhonghua). Habitat: 15-20 deg., s-facing, part shade.
	107-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Mao Xian Ping town 6 km. ne of Maoxian, Sichuan Province, China (Zhonghua). Habitat: 15-20 deg., s-facing, part shade.
	181-2001	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Akagi Village, Seta-gun, Gumma-ken Prefecture, Kanto Region, Japan.

Malus sikkimensis (Wenz.) Koehne ROSACEAE - ROSE FAMILY
	USDA 6. SIKKIM CRABAPPLE

	280-93	Graft from The Morton Arboretum. Garden collected by Joseph F. Rock western section, China (Zhonghua).

Malus 'Silver Moon' ROSACEAE - ROSE FAMILY
	USDA 4. SILVER MOON CRABAPPLE

	101-85	Plant from Simpson Orchard Co., Inc. Garden collected.

Malus spectabilis (Aiton) Borkh. ROSACEAE - ROSE FAMILY
	USDA 5. CHINESE FLOWERING CRABAPPLE

	625-60	Graft from Arie F. den Boer. Garden collected.
	281-93	Graft from The Morton Arboretum. Garden collected.

Malus 'Strawberry Parfait' Patent 4632 ROSACEAE - ROSE FAMILY
	USDA 4. STRAWBERRY PARFAIT CRABAPPLE

	106-86	Plant from Princeton Nurseries. Garden collected.

Malus sylvestris (L.) Mill. ROSACEAE - ROSE FAMILY
	USDA 3. FRENCH CRABAPPLE

	462-85	Bud from The Morton Arboretum. Garden collected.
	96-86	Seed from State Nikita Botanical Gardens. Wild collected, Crimean Region, Ukrainian S.S.R., U.S.S.R.

Malus 'Tina' ROSACEAE - ROSE FAMILY
	USDA 5. TINA CRABAPPLE

	106-90	Plant from Neumann's Nursery. Garden collected.
	788-2004	Plant from Poplar Farms Nursery & Produce Inc. Garden collected.

Malus toringoides (Rehder) Hughes ROSACEAE - ROSE FAMILY
	USDA 6. CUT-LEAVED CRABAPPLE

	965-40	Graft from The Morton Arboretum. From plant of known wild origin collected by near Tatsien-lu (Kangting), Sichuan Province, China (Zhonghua). Habitat: mountains.
	57-83	Graft from The Morton Arboretum. From plant of known wild origin collected by near Tatsien-lu (Kangting), Sichuan Province, China (Zhonghua). Habitat: mountains.
	111-93	Plant from Holden Arboretum. From plant of known wild origin collected by unknown from P'i River Valley, Anhui Province, China (Zhonghua). Habitat: roadside.
	89-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Songang village 10 km. west of Maerkang, Maerkang County, Sichuan Province, China (Zhonghua). Habitat: 85 deg., e-facing, sunny cliff face.
	90-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Songang village 10 km. west of Maerkang, Maerkang County, Sichuan Province, China (Zhonghua). Habitat: 85 deg., e-facing, sunny cliff face.
	91-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Songang village 10 km. west of Maerkang, Maerkang County, Sichuan Province, China (Zhonghua). Habitat: 85 deg., e-facing, sunny cliff face.
	93-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Songang village 10 km. west of Maerkang, Maerkang County, Sichuan Province, China (Zhonghua). Habitat: 85 deg., e-facing, sunny cliff face.
	94-2001	Plant from U.S.D.A., A.R.S., Plant Genetic Resources Unit National Clonal germplasm Repository, Cornell University. Wild collected by unknown near Songang village 10 km. west of Maerkang, Maerkang County, Sichuan Province, China (Zhonghua). Habitat: 85 deg., e-facing, sunny cliff face.

Malus transitoria (Batalin) C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 5. TIBETAN CRABAPPLE

	282-93	Graft from The Morton Arboretum. Garden collected.
	911-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected Jiang Ba Gou, Die Bu town, Gansu Province, China (Zhonghua). Habitat: n-running stream, replanted conif. forest with decid. understory, thin rocky soil.

Malus transitoria 'Schmidtcutleaf' ROSACEAE - ROSE FAMILY
	USDA 4. GOLDEN RAINDROPSÒ

	117-2006	Plant from P.P. & O. Nursery, LLC. Garden collected.

Malus tschonoskii (Maxim.) C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 6. PILLAR CRABAPPLE

	58-83	Graft from The Morton Arboretum. Garden collected.
	59-84	Plant from J. Frank Schmidt & Son Co. Garden collected.

Malus 'Weepcanzam' Patent 4038 ROSACEAE - ROSE FAMILY
	USDA 4. WEEPING CANDIED APPLEÒ

	48-84	Plant from J. Frank Schmidt & Son Co. Garden collected.
	94-90	Plant from The Morton Arboretum Research Program. Garden collected.

Malus 'White Angel' ROSACEAE - ROSE FAMILY
	USDA 4. WHITE ANGEL CRABAPPLE

	108-86	Plant from J. Frank Schmidt & Son Co. Garden collected.

Malus 'White Cascade' Patent 3644 ROSACEAE - ROSE FAMILY
	USDA 4. WHITE CASCADE CRABAPPLE

	112-85	Plant from J. Frank Schmidt & Son Co. Garden collected.

Malus yunnanensis (Franch.) C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 6. YUNNAN CRABAPPLE

	613-62	Graft from Arie F. den Boer. Garden collected.
	283-93	Graft from The Morton Arboretum. Garden collected.

Malus x zumi (Matsum.) Rehder ROSACEAE - ROSE FAMILY
	USDA 6. ZUMI CRABAPPLE

	580-2001	Bud from The Morton Arboretum. Garden collected.

Malus x zumi 'Calocarpa' ROSACEAE - ROSE FAMILY
	USDA 5. REDBUD CRABAPPLE

	966-40	Graft from The Morton Arboretum. Garden collected.
	46-84	Plant from Simpson Orchard Co., Inc. Garden collected.
	105-90	Plant from The Morton Arboretum Research Program. Garden collected.
	226-94	Plant from Western DuPage Landscaping. Garden collected.
	804-2004	Plant from Royal Oaks Nursery. Garden collected.

Meliosma dilleniifolia ssp. cuneifolia (Franch.) Beusekom SABIACEAE - SABIA FAMILY
	USDA 9. MELIOSMA

	84-2003	Seed from Shanghai Botanic Garden. Wild collected by unknown on Mt. Maiji, Gansu Province, China (Zhonghua). Habitat: in mountain slope/hill shrubbery.
	882-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected in Bai Long Jiang Forest Station / Ge'er Gou, Zhou Qu Shen County, Gansu Province, China (Zhonghua). Habitat: steep n-running ravine, mesic mixed conif/decid forest, very open, cut-back and grazed area in high organic soil.

Menispermum canadense L. MENISPERMACEAE - MOONSEED FAMILY
	USDA 4. MOONSEED

	553-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn in Lowden State Park over the Rock River, Ogle County, Illinois. Habitat: Oak-Hickory woods.

Mespilus germanica L. ROSACEAE - ROSE FAMILY
	USDA 6. MEDLAR

	518-37	Seed from Leningrad Botanical Garden. Garden collected.
	655-79	Cutting from The Morton Arboretum. Garden collected.
	665-80	Seed from State Nikita Botanical Gardens. Wild collected in Tauria, Crimean Region, Ukrainian S.S.R., U.S.S.R.
	682-80	Seed from State Nikita Botanical Gardens. Wild collected in Tauria, Crimean Region, Ukrainian S.S.R., U.S.S.R.

Microbiota decussata Komar. CUPRESSACEAE - CYPRESS FAMILY
	USDA 2. SIBERIAN-CYPRESS

	190-85	Plant from Iseli Nursery Inc. Garden collected.
	391-97	Seed from Midwest Plant Collecting Collaborative (MWPCC) 1997 Russia Far East Expedition. Wild collected, Rossiya (Russia) Republic, Russia. Habitat: on 60 degree w-facing slope in very loose rock boulders on an open outcrop.

Miscanthus sinensis 'Sirene' (HERBACEOUS) POACEAE (GRAMINEAE) - GRASS FAMILY
	USDA 4. SIRENE SILVER GRASS, SIRENE EULALIA

	326-2004	Plant from various commercial sources. Garden collected.

Miscanthus sinensis 'Variegatus' (HERBACEOUS) POACEAE (GRAMINEAE) - GRASS FAMILY
	USDA 4. VARIEGATED SILVER GRASS

	386-2003	Plant from various commercial sources. Garden collected.
	221-2005	Plant from various commercial sources. Garden collected.

Miscanthus sinensis 'Yaku Jima' (HERBACEOUS) POACEAE (GRAMINEAE) - GRASS FAMILY
	USDA 4. YAKU JIMA SILVER GRASS

	199-2004	Plant from various commercial sources. Garden collected.

Mitchella repens L. RUBIACEAE - MADDER FAMILY
	USDA 5. PARTRIDGE BERRY

	84-99	Seed from United States National Arboretum. Wild collected in Blackwater National Wildlife Refuge, Dorchester County, Maryland.
	691-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected along Song Bird Trail, Chattahooche National Forest, Murray County, Georgia. Habitat: next to low boggy area, full sun, loam soil.

Molinia caerulea 'Strahlenquelle' (HERBACEOUS) POACEAE (GRAMINEAE) - GRASS FAMILY
	USDA 5. FOUNTAIN SPRAY MOOR GRASS

	138-2005	Plant from various commercial sources. Garden collected.

Morus alba L. MORACEAE - MULBERRY FAMILY
	USDA 5. WHITE MULBERRY

	920-26	Seed from Chinese Nurseries Ltd. Garden collected.
	384-53	Graft from Arnold Arboretum of Harvard University. Garden collected.
	978-57	Cutting from The Morton Arboretum. Garden collected.

Morus australis Poir. MORACEAE - MULBERRY FAMILY
	USDA 5. JAPANESE MULBERRY

	1118-40	Seed from Hokkaido University. Garden collected.
	241-71	Seed from Gradina Botanica a Universitatii din Cluj-Napoca. Garden collected.
	26-72	Seed from The Morton Arboretum. Garden collected.

Morus mongolica (Bunge) C.K.Schneid. MORACEAE - MULBERRY FAMILY
	USDA 5. MONGOLIAN MULBERRY

	55-95	Plant from The Morton Arboretum Research Program. Wild collected site not noted, Hebei Province, China (Zhonghua).
	277-95	Seed from North America-China Plant Exploration Consortium (NACPEC). Wild collected by Zhang Zhimming, Beijing Botanical Garden Botanical Institute of the Chinese Academy at Xiangshan, Beijing Shi Municipality, China (Zhonghua).

Myrica gale L. MYRICACEAE - BAYBERRY FAMILY
	USDA 1. SWEET GALE

	63-78	Seed from University of Guelph Arboretum. Wild collected Parry Sound area, Ontario Province, Canada.
	19-86	Seed from Glendon Hall Research Lab. Dept. of Botany. Wild collected, Ontario Province, Canada.
	68-86	Seed from Beal-Garfield Botanic Garden, Michigan State University. Wild collected, Marquette County, Michigan. Habitat: Wet interdunal flats..

Narcissus 'Quail' (HERBACEOUS) AMARYLLIDACEAE - AMARYLLIS FAMILY
	USDA 5. QUAIL NARCISSUS

	538-2001	Plant from various commercial sources. Garden collected.
	693-2006	Plant from various commercial sources. Garden collected.

Neillia sinensis Oliv. ROSACEAE - ROSE FAMILY
	USDA 6. CHINESE NEILLIA

	381-82	Cutting from The Morton Arboretum. Garden collected.

Nepeta x faassenii 'Dropmore' (HERBACEOUS) LAMIACEAE (LABIATAE) - MINT FAMILY
	USDA 3. DROPMORE CATMINT

	112-97	Plant from various commercial sources. Garden collected.
	487-2005	Plant from various commercial sources. Garden collected.

Nepeta x faassenii 'Little Titch' (HERBACEOUS) LAMIACEAE (LABIATAE) - MINT FAMILY
	USDA 3. LITTLE TITCH CATMINT

	388-2003	Plant from various commercial sources. Garden collected.

Neviusia alabamensis Gray ROSACEAE - ROSE FAMILY
	USDA 6. ALABAMA SNOW WREATH

	552-39	Plant from Charles C. Deam. Garden collected.
	886-55	Cutting from The Morton Arboretum. Garden collected.
	813-64	Cutting from The Morton Arboretum. Garden collected.
	273-68	Cutting from The Morton Arboretum. Garden collected.
	292-80	Plant from Staff, The Morton Arboretum. Wild collected by Ross C. Clark along Long Creek, Pope County, Arkansas.
	776-80	Plant from Field Museum of Natural History. Garden collected.
	66-95	Sucker from The Morton Arboretum. Garden collected.
	1119-2004	Plant from Ridgecrest Nursery and Gardens. Wild collected, Searcy County, Arkansas.

Nymphaea 'Marliacea Chromatella' (HERBACEOUS) NYMPHAEACEAE - WATER-LILY FAMILY
	USDA 4 - 11. MARLIACEA CHROMATELLA HARDY WATER-LILY

	1019-2005	Plant from various commercial sources. Garden collected.

Nymphaea odorata Aiton (HERBACEOUS) NYMPHAEACEAE - WATER-LILY FAMILY
	USDA 3 - 11. FRAGRANT WATER-LILY, AMERICAN WATER-LILY, AMERICAN WHITE WATER-LILY, WHITE WATER-LILY, POND LILY

	1405-2004	Plant from various commercial sources. Garden collected.

Oemleria cerasiformis (Torr. & A.Gray ex Hook. & Arn.) J.W.Landon ROSACEAE - ROSE FAMILY
	USDA 7. OSO BERRY, INDIAN-PLUM

	193-82	Seed from Regional Park & Recreation Agency of the Mid Willamette Valley. Wild collected in Salem, Marion County, Oregon.

Onoclea sensibilis L. (HERBACEOUS) DRYOPTERIDACEAE - WOOD FERN FAMILY
	USDA 4. SENSITIVE FERN

	287-U	Plant from various commercial sources. Garden collected.

Opuntia polyacantha Haw. CACTACEAE - CACTUS FAMILY
	USDA 5. PLAINS PRICKLY-PEAR, CLIFF PRICKLY-PEAR, GRIZZLY-BEAR PRICKLY-PEAR, HAIRY PRICKLY-PEAR, HEDGEHOG PRICKLY-PEAR, NICHOL'S PRICKLY-PEAR, PORCUPINE PRICKLY-PEAR, RED-SPINED PRICKLY-PEAR, STARVATION PRICKLY-PEAR

	267-78	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected in the Great Divide basin about 40 km. northwest of Rawlins, Wyoming.
	168-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg southeast of Pringle, Custer County, South Dakota.

Orixa japonica Thunb. RUTACEAE - RUE FAMILY
	USDA 6. JAPANESE ORIXA

	1794-22	Cutting from Arnold Arboretum of Harvard University. Garden collected by Charles S. Sargent, Arnold Arboretum of Harvard University, Japan.
	842-34	Cutting from The Morton Arboretum. Garden collected by Charles S. Sargent, Japan.
	1309-39	Seed from The Morton Arboretum. Garden collected by Charles S. Sargent, Japan.
	1030-55	Cutting from The Morton Arboretum. Garden collected by Charles S. Sargent, Japan.
	315-61	Seed from Kyoto University Experimental Forest Station. Garden collected.
	582-2001	Cutting from The Morton Arboretum. From plant of known wild origin collected by Charles S. Sargent, Japan.

Osmunda claytoniana L. (HERBACEOUS) OSMUNDACEAE - ROYAL FERN FAMILY
	USDA 3. INTERRUPTED FERN

	438-96	Plant from various commercial sources. Garden collected.

Ostrya carpinifolia Scop. BETULACEAE - BIRCH FAMILY
	USDA 6. EUROPEAN HOP-HORNBEAM

	132-76	Plant from United States National Arboretum. Wild collected near Nevesinje on Mt. Velez, Bosnia and Hercegovina Republic, Yugoslavia.
	196-88	Seed from Orto Botanico dell'Universita Botanical Garden of the University of Siena. Wild collected by unknown near Monteoliveto, Siena Province, Tuscany Autonomous Region, Italy.
	429-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 Republic of Georgia Expedition. Wild collected coll. area G22, Georgia.

Ostrya virginiana (Mill.) K.Koch BETULACEAE - BIRCH FAMILY
	USDA 5. IRONWOOD, AMERICAN HOP-HORNBEAM, EASTERN HOP-HORNBEAM, HOP-HORNBEAM

	1009-59	Plant from The Morton Arboretum. Wild collected at The Morton Arboretum, Du Page County, Illinois. Habitat: woodland.
	951-73	Plant from The Morton Arboretum. Wild collected Parson's Grove on Morton Arboretum, near Lisle, Du Page County, Illinois.
	181-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg 5 mi. north of Deadwood, Lawrence County, South Dakota.
	187-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg Rock Creek, south of Deselm, Kankakee County, Illinois. Habitat: Cliff.
	575-83	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn, Kankakee County, Illinois.
	162-94	Plant from Klehm Nursery. Garden collected.
	159-95	Plant from Matt Tures Sons Nursery. Garden collected.
	390-2000	Plant from Possibility Place Nursery, Inc. Garden collected.
	145-2002	Plant from Charles J. Fiore Company, Inc. Garden collected.
	356-2002	Plant from Possibility Place Nursery, Inc. Garden collected.
	101-U	Unknown from unknown. Unknown collected.

Ostryopsis davidiana (Baill.) Decne. BETULACEAE - BIRCH FAMILY
	USDA 6. FATHER DAVID'S OSTRYOPSIS

	1339-59	Plant from Morden Research Station, Research Branch, Canada Agriculture. From plant of known wild origin collected by Joseph F. Rock along the Tao River, Gansu Province, China (Zhonghua). Habitat: on rocky banks.
	470-82	Layer from The Morton Arboretum. From plant of known wild origin collected by Joseph F. Rock along the Tao River, Gansu Province, China (Zhonghua). Habitat: on rocky banks.
	543-82	Sucker from The Morton Arboretum. From plant of known wild origin collected by Joseph F. Rock along the Tao River, Gansu Province, China (Zhonghua). Habitat: on rocky banks.

Oxydendrum arboreum (L.) DC. ERICACEAE - HEATH FAMILY
	USDA 6. SOURWOOD

	1341-39	Plant from University of Chicago. Garden collected.
	142-63	Plant from Lights Landscape Nurseryman. Garden collected.
	248-64	Plant from Cole Nursery Co. Garden collected.

Pachysandra procumbens Michx. BUXACEAE - BOXWOOD FAMILY
	USDA 6. ALLEGHENY PACHYSANDRA

	352-41	Plant from Wilbur Dubois & Son. Garden collected.
	330-81	Cutting from The Morton Arboretum. Garden collected.
	101-95	Plant from Fertile Delta Garden Center. Garden collected.
	149-95	Plant from Hortech. Garden collected.
	103-2010	Division from The Morton Arboretum. Garden collected.

Pachysandra terminalis Siebold & Zucc. BUXACEAE - BOXWOOD FAMILY
	USDA 5. JAPANESE PACHYSANDRA

	569-38	Plant from The Morton Arboretum. Unknown collected.
	842-79	Plant from The Morton Arboretum. Garden collected.
	165-2000	Plant from Hortech. Garden collected.
	102-U	Unknown from unknown. Unknown collected.

Paeonia delavayi Franch. RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 6. DELAVAY'S PEONY, DELAVAY PEONY

	212-78	Seed from Botanischer Garten der Johann Wolfgang Goethe-Universitat. Garden collected.

Paeonia obovata ssp. obovata (HERBACEOUS) RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 7. WOODLAND PEONY

	43-2000	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Okutama Town, west of Tokyo, Nishitama County, Tokyo Prefecture, Kanto Region, Japan.
	314-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Wild collected at Xiao Wen Forest Center, Heng Jian Zhen, Jiaocheng County, Shanxi Province, China (Zhonghua). Habitat: moist woods in dense understory with thin canopy on 45 deg. n-facing slope in rich moist well-drained humus.

Paeonia suffruticosa 'Rimpoh' RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 5. FEATHERS OF A HEAVENLY BIRD TREE PEONY

	196-2004	Plant from Forest Farm Arboretum and Nursery. Garden collected.

Paeonia tenuifolia L. (HERBACEOUS) RANUNCULACEAE - BUTTERCUP FAMILY
	USDA 8. FRINGED PEONY

	245-99	Seed from Botanical Garden and Museum, University of Oslo. Garden collected.

Parthenocissus inserta (J.Kern.) Fritsch VITACEAE - GRAPE FAMILY
	USDA 5. THICKET CREEPER

	754-79	Seed from Staff, The Morton Arboretum. Wild collected by Gerould Wilhelm southwest corner of the Iroquois County Conservation Area, Iroquois County, Illinois. Habitat: top of drainage ditch culvert.

Parthenocissus quinquefolia (L.) Planch. VITACEAE - GRAPE FAMILY
	USDA 3. VIRGINIA CREEPER

	143-80	Cutting from The Morton Arboretum. Garden collected.
	521-2004	Plant from David Listerman & Associates. Garden collected.

Parthenocissus tricuspidata (Siebold & Zucc.) Planch. VITACEAE - GRAPE FAMILY
	USDA 5. BOSTON-IVY, JAPANESE CREEPER

	105-58	Seed from Botanical Gardens, University of Tokyo. Garden collected.
	184-91	Cutting from The Morton Arboretum. Garden collected.
	359-96	Plant from Midwest Groundcovers. Garden collected.
	20-97	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. From plant of known wild origin collected at Lyonakan near the northwest part of Pyongyang city, N. Korea.

Parthenocissus tricuspidata 'Lowii' VITACEAE - GRAPE FAMILY
	USDA 4. LOW'S BOSTON-IVY, LOW'S JAPANESE CREEPER, MINIATURE JAPANESE-IVY

	117-87	Plant from White Flower Farm. Garden collected.
	269-94	Plant from Midwest Groundcovers. Garden collected.

Parthenocissus tricuspidata 'Robusta' VITACEAE - GRAPE FAMILY
	USDA 4. ROBUST BOSTON-IVY, ROBUST JAPANESE CREEPER

	76-95	Plant from Wayside Gardens. Garden collected.

Paulownia tomentosa (Thunb.) Steud. SCROPHULARIACEAE - FIGWORT FAMILY
	USDA 6. EMPRESS TREE, PRINCESS TREE

	4-44	Seed from Masonic Homes. Garden collected.
	471-82	Cutting from The Morton Arboretum. Garden collected.
	514-82	Plant from Purdue University Department of Forestry. Garden collected.

Paxistima canbyi Gray CELASTRACEAE - STAFF TREE FAMILY
	USDA 3. MOUNTAIN-LOVER, CLIFF-GREEN

	521-74	Cutting from The Morton Arboretum. Garden collected.

Perovskia abrotanoides Kar. LAMIACEAE (LABIATAE) - MINT FAMILY
	USDA 5. CUT-LEAVED RUSSIAN-SAGE

	363-85	Plant from T & Z Nursery. Garden collected.
	326-88	Plant from The Natural Garden. Garden collected.
	208-89	Plant from T & Z Nursery. Garden collected.
	472-2005	Plant from Hoffie Nursery, Inc. Garden collected.

Perovskia atriplicifolia Benth. LAMIACEAE (LABIATAE) - MINT FAMILY
	USDA 6. RUSSIAN-SAGE, AFGHAN-SAGE

	56-53	Plant from Homestead Nurseries. Garden collected.
	722-79	Cutting from The Morton Arboretum. Garden collected.
	184-88	Division from The Morton Arboretum. Garden collected.
	94-2000	Plant from Midwest Groundcovers. Garden collected.
	399-2001	Plant from Planter's Palette. Garden collected.
	424-2001	Plant from Midwest Groundcovers. Garden collected.
	395-2003	Plant from Midwest Groundcovers. Garden collected.

Phellodendron amurense Rupr. RUTACEAE - RUE FAMILY
	USDA 3. AMUR CORKTREE

	1721-25	Plant from Naperville Nurseries. Garden collected.
	568-27	Seed from Copenhagen Botanical Garden. Garden collected.
	475-32	Seed from County of Monroe Department of Parks. Garden collected.
	1585-35	Seed from Arnold Arboretum of Harvard University. Garden collected.
	604-36	Seed from Hokkaido University. Garden collected.
	352-63	Graft from Arnold Arboretum of Harvard University. Garden collected.
	353-63	Graft from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson at Changyang Hsien, Hubei Province, China (Zhonghua).
	348-86	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Wild collected, Russian S.F.S.R., U.S.S.R.

Phellodendron lavallei Dode RUTACEAE - RUE FAMILY
	USDA 6. LAVALLE CORKTREE

	625-40	Seed from Arboretum des Barres et Fruticetum Vilmorinianum. Garden collected.
	85-2002	Graft from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson, Hubei Province, China (Zhonghua).

Phellodendron sachalinense (F.Schmidt) Sarg. RUTACEAE - RUE FAMILY
	USDA 3. SAKHALIN CORKTREE

	317-83	Seed from Tallinn Botanical Garden of the Estonian Academy of Sciences. Wild collected southern Kuril Islands, Russian S.F.S.R., U.S.S.R.

Philadelphus coronarius L. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 5. SWEET MOCK-ORANGE

	362-84	Plant from Hooks Nursery. Garden collected.

Philadelphus lewisii Pursh HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 5. LEWIS' MOCK-ORANGE

	351-79	Seed from The Botanical Garden, University of British Columbia. Wild collected, Similkameen District, British Columbia Province, Canada.
	1010-80	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn in Siegel Pass, Sanders County, Montana. Habitat: Granite talus.

Philadelphus pekinensis Rupr. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 6. PEKING MOCK-ORANGE

	387-57	Cutting from The Morton Arboretum. Garden collected.
	538-78	Cutting from The Morton Arboretum. Garden collected.
	458-80	Cutting from The Morton Arboretum. Garden collected.
	325-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yong Xiu Gou (Valley with Beautiful Clouds), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: growing at the base of a north facing cliff.

Philadelphus schrenkii Rupr. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 5. SCHRENK'S MOCK-ORANGE

	836-56	Cutting from Arnold Arboretum of Harvard University. Garden collected.
	245-84	Cutting from The Morton Arboretum. Garden collected.
	336-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: moist valleys only; woodland understory.
	40-95	Seed from Botanical Garden, University of Helsinki. Wild collected by unknown in Mt. Changbai area, Hong shi forest area, 60 km. east of Changbai Mountain Research Station (& Erdaobeihe town), Antu County, Jilin Province, China (Zhonghua). Habitat: wet temperate Acer, Fraxinus, Maackia, Pinus koraiensis, Populus, Tilia forest at a small stream.

Philadelphus subcanus Koehne HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 6. MOCK-ORANGE

	39-93	Seed from Shanghai Botanic Garden. Wild collected on Mt. Emei and in Jiuzhaigou area, Sichuan Province, China (Zhonghua). Habitat: in mixed forest.

Philadelphus tenuifolius Rupr. & Maxim. HYDRANGEACEAE - HYDRANGEA FAMILY
	USDA 5. MOCK-ORANGE

	424-83	Seed from Botanical Garden of the Latvian State University. Wild collected Gornotajezhnaja (St. Mont Taig), ad torrentem Kabanij in the Ussuri district, Russian S.F.S.R., U.S.S.R. Habitat: in sylva frondosa.

Phlox carolina 'Miss Lingard' (HERBACEOUS) POLEMONIACEAE - PHLOX FAMILY
	USDA 5. MISS LINGARD THICK-LEAVED PHLOX

	696-2005	Plant from various commercial sources. Garden collected.

Photinia villosa (Thunb.) DC. ROSACEAE - ROSE FAMILY
	USDA 5. ORIENTAL PHOTINIA

	470-60	Plant from F. J. Grootendorst & Son. Garden collected.
	38-82	Plant from United States National Arboretum. Wild collected near Sago City, Tsushima Island, Nagasaki Prefecture, Kyushu-chiho Region, Japan. Habitat: stream bed.

Physocarpus capitatus (Pursh) Kuntze ROSACEAE - ROSE FAMILY
	USDA 5. PACIFIC NINEBARK

	107-2003	Cutting from The Morton Arboretum. From plant of known wild origin collected at Squakum Lake, British Columbia Province, Canada.

Physocarpus intermedius (Rydb.) C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 3. ILLINOIS NINEBARK

	397-86	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg north side of US 160, Ozark County, Missouri. Habitat: stream bed.
	173-94	Plant from Klehm Nursery. Garden collected.

Physocarpus monogynus (Torr.) Coult. ROSACEAE - ROSE FAMILY
	USDA 5. MOUNTAIN NINEBARK

	221-97	Plant from Hinsdale Nurseries Inc. Garden collected.

Physocarpus stellatus (Rydb.) Rehder ROSACEAE - ROSE FAMILY
	USDA 6. ALABAMA NINEBARK

	248-88	Cutting from The Morton Arboretum. Garden collected.

Physostegia virginiana 'Pink Bouquet' (HERBACEOUS) LAMIACEAE (LABIATAE) - MINT FAMILY
	USDA 4. PINK BOUQUET OBEDIENT PLANT, PINK BOUQUET FALSE DRAGONHEAD

	398-2003	Plant from various commercial sources. Garden collected.

Picea abies 'Frohburg' PINACEAE - PINE FAMILY
	USDA 3. FROHBURG WEEPING NORWAY SPRUCE, FROHBURG NORWAY SPRUCE

	197-2006	Plant from Beaver Creek Nursery, Inc. Garden collected.

Picea abies 'Inversa' PINACEAE - PINE FAMILY
	USDA 4. DROOPING NORWAY SPRUCE

	474-61	Graft from The Morton Arboretum. Garden collected.

Picea abies 'Repens' PINACEAE - PINE FAMILY
	USDA 4. CREEPING NORWAY SPRUCE

	480-61	Graft from Wm. T. Gotelli. Garden collected.

Picea abies 'Virgata' PINACEAE - PINE FAMILY
	USDA 4. TWIGGY NORWAY SPRUCE

	652-26	Plant from Hermann A. Hesse Baumschulen. Garden collected.
	88-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Picea bicolor 'Howell's Dwarf' PINACEAE - PINE FAMILY
	USDA 5. HOWELL'S DWARF ALCOCK'S SPRUCE, HOWELL'S DWARF ALCOCK SPRUCE

	228-2003	Plant from Rich's Foxwillow Pines. Garden collected.
	89-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Picea gemmata Rehder & E.H.Wilson PINACEAE - PINE FAMILY
	USDA 6. SPRUCE

	1062-57	Plant from Holden Arboretum. Garden collected.

Picea glauca (Moench) Voss PINACEAE - PINE FAMILY
	USDA 3. WHITE SPRUCE, CANADA SPRUCE, SKUNK SPRUCE, CAT SPRUCE, SINGLE SPRUCE

	2628-22	Plant from unknown. Unknown collected.
	491-80	Plant from David Barnett, The Morton Arboretum. Garden collected.
	136-83	Seed from Montreal Botanic Garden. Wild collected site not noted, Canada. Habitat: damp woods.
	95-94	Plant from Western DuPage Landscaping. Garden collected.
	480-2004	Plant from Badger Evergreen Nursery, L.L.C. Garden collected.
	1079-2004	Plant from Evensen Nursery Co. Garden collected.
	252-2005	Plant from Mariani Nursery. Garden collected.
	223-U	Unknown from unknown. Unknown collected.

Picea glauca 'Conica' PINACEAE - PINE FAMILY
	USDA 4. DWARF WHITE SPRUCE, DWARF ALBERTA SPRUCE

	1310-23	Plant from John van Gemert, The Morton Arboretum. Unknown collected.
	1046-2004	Plant from Shemin Nurseries, Inc. Garden collected.
	1312-2004	Plant from Mariani Nursery. Garden collected.

Picea glauca 'Pendula' PINACEAE - PINE FAMILY
	USDA 2. WEEPING WHITE SPRUCE, WEEPING CANADA SPRUCE, WEEPING SKUNK SPRUCE, WEEPING CAT SPRUCE, WEEPING SINGLE SPRUCE

	868-58	Plant from D. Hill Nursery Co. Garden collected near Guelph, Ontario Province, Canada.
	1049-2004	Plant from Shemin Nurseries, Inc. Garden collected.
	91-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Picea glehnii (F.Schmidt) Mast. PINACEAE - PINE FAMILY
	USDA 6. SAKHALIN SPRUCE

	579-65	Graft from Highland Botanical Park, County of Monroe Department of Parks. Garden collected.
	40-86	Plant from United States National Arboretum. Wild collected, Japan.
	137-87	Plant from Midwest Groundcovers. From plant of known wild origin collected, Japan.

Picea jezoensis var. hondoensis (Mayr) Rehder PINACEAE - PINE FAMILY
	USDA 5. HONSHU SPRUCE

	134-59	Seed from Botanical Garden of Osaka City University. Garden collected.

Picea jezoensis 'Landis' PINACEAE - PINE FAMILY
	USDA 5. LANDIS YEDDO SPRUCE

	92-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Picea koyamai Shiras. PINACEAE - PINE FAMILY
	USDA 6. KOYAMA SPRUCE

	138-45	Graft from The Morton Arboretum. Garden collected.
	126-65	Seed from Arboretum des Barres et Fruticetum Vilmorinianum. Garden collected.
	138-87	Plant from Midwest Groundcovers. From plant of known wild origin collected by Claude E. Heit at Mt. Yatu, Japan.
	251-93	Seed from United States National Arboretum. Wild collected site not specified, China (Zhonghua).
	456-96	Graft from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson at Yatanga-dake, Shinano, Hondo Island, Japan.

Picea mariana 'Nana' PINACEAE - PINE FAMILY
	USDA 3. DWARF BLACK SPRUCE

	44-2007	Plant from Bailey Nurseries, Inc. Garden collected.

Picea maximowiczii Regel ex Mast. PINACEAE - PINE FAMILY
	USDA 7. JAPANESE BUSH SPRUCE

	167-52	Graft from Westtown Arboretum. Garden collected.
	279-53	Cutting from Westtown Arboretum. Garden collected.

Picea meyeri Rehder & E.H.Wilson PINACEAE - PINE FAMILY
	USDA 6. MEYER'S SPRUCE

	302-90	Seed from Staff, The Morton Arboretum. Wild collected near Pangquangou, Shanxi Province, China (Zhonghua). Habitat: in upland spruce-larch-poplar-birch forest.
	393-2001	Plant from Morris Arboretum of the University of Pennsylvania. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: wet upland woods.

Picea orientalis 'Compacta' PINACEAE - PINE FAMILY
	USDA 4. COMPACT ORIENTAL SPRUCE

	97-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Picea orientalis 'Skylands' PINACEAE - PINE FAMILY
	USDA 4. SKYLANDS ORIENTAL SPRUCE, SKYLANDS DWARF GOLDEN ORIENTAL SPRUCE

	98-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Picea pungens 'Glauca Pendula' PINACEAE - PINE FAMILY
	USDA 2. WEEPING BLUE SPRUCE

	571-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Picea pungens 'Glauca Procumbens' PINACEAE - PINE FAMILY
	USDA 2. PROSTRATE BLUE SPRUCE, PROCUMBENT BLUE SPRUCE

	99-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Picea pungens 'Globosa' PINACEAE - PINE FAMILY
	USDA 3. GLOBE BLUE SPRUCE

	261-2005	Plant from Charles J. Fiore Company, Inc. Garden collected.
	71-2006	Plant from Bountiful Farms. Garden collected.

Picea pungens 'Walnut Glen' PINACEAE - PINE FAMILY
	USDA 2. WALNUT GLEN BLUE SPRUCE

	100-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Picea retroflexa Mast. PINACEAE - PINE FAMILY
	USDA 7. GREEN DRAGON SPRUCE

	457-96	Graft from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson near Tachien-lu, Sichuan Province, China (Zhonghua).

Picea schrenkiana Fisch. & C.A.Mey. PINACEAE - PINE FAMILY
	USDA 6. SCHRENK'S SPRUCE, ASIAN SPRUCE, SCHRENK SPRUCE

	679-57	Graft from Arnold Arboretum of Harvard University. Garden collected.
	117-66	Seed from Conservatoire et Jardins Botaniques de Nancy. Garden collected.

Picea sitchensis (Bong.) Carriere PINACEAE - PINE FAMILY
	USDA 7. SITKA SPRUCE

	453-51	Graft from Westtown Arboretum. Garden collected.
	525-2001	Seed from Washington Park Arboretum University of Washington. Wild collected by unknown 300 m. north of Point Partridge lighthouse, Fort Ebay State Park, Island County, Washington. Habitat: coniferous forest on w-facing coastal bluffs & hills adjacent to Puget Sound on clay to silty clay soils.

Picea torano (Siebold ex K.Koch) Koehne PINACEAE - PINE FAMILY
	USDA 6. TIGERTAIL SPRUCE, JAPANESE SPRUCE

	1916-25	Seed from Main Botanical Garden. Garden collected.
	2178-26	Plant from Arnold Arboretum of Harvard University. Garden collected.
	561-38	Plant from U.S.D.A. Garden collected.
	308-2006	Plant from Rich's Foxwillow Pines. Garden collected.

Picea wilsonii Mast. PINACEAE - PINE FAMILY
	USDA 6. WILSON'S SPRUCE

	20-46	Cutting from The Morton Arboretum. Garden collected.
	860-58	Plant from Arnold Arboretum of Harvard University. Garden collected.
	497-61	Graft from The Morton Arboretum. Garden collected.
	142-87	Plant from Midwest Groundcovers. Garden collected.
	24-2005	Plant from United States National Arboretum. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1996 Shaanxi & Gansu Province China Expedition Ningxi Preserve, Caiziping Forest Station, enroute to Qi Shi Yi Gong Li, Shou Yang Shan, Ankang District, Shaanxi Province, China (Zhonghua). Habitat: dry rocky slope in full sun among boulders; 45% SW slope;.

Pinus aristata Engelm. PINACEAE - PINE FAMILY
	USDA 6. ROCKY MOUNTAIN BRISTLECONE PINE

	365-46	Plant from Plumfield Garden Center. Garden collected.

Pinus armandii Franch. PINACEAE - PINE FAMILY
	USDA 7. CHINESE WHITE PINE

	414-35	Seed from Hortus Botanicus Academia Sinica. Garden collected by unknown.
	336-2002	Seed from North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition. Wild collected near Heng He Forestry Center, Heng He Zhen, Yang Cheng County, Shanxi Province, China (Zhonghua). Habitat: garden.

Pinus echinata Mill. PINACEAE - PINE FAMILY
	USDA 6. SHORTLEAF PINE, ARKANSAS PINE, SOUTHERN PINE

	1177-2004	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2004 Ozark Expedition. Wild collected Pickle Springs Conservation Area, bald lookout on trail, St. Genevieve County, Missouri. Habitat: LaMotte sandstone outcrop/bluff, marl derived from LaMotte sandstone, 10-20% nw-slope.

Pinus flexilis 'Cesarini Blue' PINACEAE - PINE FAMILY
	USDA 5. CESARINI BLUE LIMBER PINE

	105-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Pinus mugo Turra PINACEAE - PINE FAMILY
	USDA 2. MUGO PINE, MOUNTAIN PINE, SCRUB MOUNTAIN PINE

	750-56	Graft from The Morton Arboretum. Garden collected.
	273-74	Plant from Swanson Brothers Nursery. Garden collected.
	138-78	Plant from United States National Arboretum. Garden collected.
	282-79	Seed from Botanic Garden of Natural Science Faculty of Komensky University. Wild collected Spiseke Rudohorie, Trestnik, Czechoslovakia.
	4-95	Seed from Arboretum Simeria. Wild collected in Retezat National Park in the Transylvanian Alps, Hunedoara District, Romania.

Pinus mugo 'Bubikopf' PINACEAE - PINE FAMILY
	USDA 2. BUBIKOPF MUGO PINE

	316-2006	Plant from Rich's Foxwillow Pines. Garden collected.

Pinus peuce 'Arnold Dwarf' PINACEAE - PINE FAMILY
	USDA 5. ARNOLD DWARF BALKAN PINE, ARNOLD DWARF MACEDONIAN PINE

	207-2006	Plant from Beaver Creek Nursery, Inc. Garden collected.

Pinus ponderosa Douglas ex P.Lawson & C.Lawson PINACEAE - PINE FAMILY
	USDA 6. PONDEROSA PINE

	573-47	Seed from A. G. Johnson. Wild collected in the Coronado National Forest near Tucson, Arizona.
	291-65	Seed from United States National Arboretum. Wild collected site not noted, Lawrence County, South Dakota.
	220-77	Plant from Vans Pines, Inc. Garden collected.
	450-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along NE-2 in the west end of the Nebraska National Forest about 9 mi. south of Crawford in Bryan Canyon, Dawes County, Nebraska. Habitat: sandy roadside.
	628-81	Seed from Beal-Garfield Botanic Garden, Michigan State University. Wild collected thin stand atop a small butte, Yellowstone County, Montana.
	446-86	Plant from Klehm Nursery. Garden collected.
	225-91	Seed from The Morton Arboretum. Wild collected by Peter van der Linden & Ed Hedborn Nature Conservancy Niobrara Valley Preserve, 17 mi. north of Johnstown, north side of river, east of bridge, Keya Paha County, Nebraska. Habitat: on a steep, s-facing, dry bluff top.
	253-97	Plant from Klehm Nursery. Garden collected.
	117-U	Unknown from unknown. Unknown collected.

Pinus pumila 'Jeddeloh' PINACEAE - PINE FAMILY
	USDA 4. JEDDELOH JAPANESE STONE PINE, JEDDELOH DWARF STONE PINE

	321-2006	Plant from Rich's Foxwillow Pines. Garden collected.

Pinus pungens Lamb. PINACEAE - PINE FAMILY
	USDA 7. TABLE MOUNTAIN PINE, HICKORY PINE, MOUNTAIN PINE, PRICKLY PINE, SQUIRREL PINE

	255-86	Seed from Lewis Ginter Botanical Garden. Wild collected 3.1 km. east of Mount Mitchell, McDowell County, North Carolina. Habitat: exposed ridges.

Pinus resinosa Aiton PINACEAE - PINE FAMILY
	USDA 2. RED PINE

	1804-25	Plant from Michigan State Forest Nursery. Garden collected.
	638-40	Plant from State of Illinois Department of Conservation State Division of Forestry. Garden collected.
	674-42	Plant from State of Illinois Department of Conservation State Division of Forestry. Garden collected.
	159-75	Seed from Staff, The Morton Arboretum. Wild collected west side of the Fox River across from Sheridan, La Salle County, Illinois. Habitat: river bluff.
	447-86	Plant from Klehm Nursery. Garden collected.
	255-93	Plant from Richard Eyre, Foxwillow Pines. From plant of known wild origin collected west side of the Fox River across from Sheridan, La Salle County, Illinois. Habitat: on edge of cliff on exposed bedrock.
	207-97	Seed from The Morton Arboretum. Wild collected by Richard Young & Peter van der Linden opposite Sheridan, La Salle County, Illinois. Habitat: sandstone bluff top west side of Fox River along County highway bridge.
	119-U	Unknown from unknown. Unknown collected.

Pinus rigida Mill. PINACEAE - PINE FAMILY
	USDA 4. PITCH PINE

	1297-22	Plant from L. E. Williams Nursery Co. Garden collected.
	488-80	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected New Jersey Pine Barrens, along Backerville Road, Ocean County, New Jersey. Habitat: Bog edges.
	365-U	unknown. Garden collected.

Pinus sibirica Mayr PINACEAE - PINE FAMILY
	USDA 3. SIBIRIAN PINE

	190-93	Seed from 1993 Expedition to Russia (Gorno-Altai) Chicago BG, Holden Arb, Minn. Landsc. Arb, Mo. BG, & Morton Arb. Wild collected by Peter J. van der Linden, The Morton Arboretum in Katunsky Mountain Range of the Altai Mountains south of Tujngur village, Gorno-Altayskaya Autonomous Region, Russia. Habitat: in shrub-stone steppe on southe-facing slope.

Pinus strobus 'Greg' PINACEAE - PINE FAMILY
	USDA 4. GREG EASTERN WHITE PINE, GREG'S FORM EASTERN WHITE PINE

	117-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Pinus strobus 'Pendula' PINACEAE - PINE FAMILY
	USDA 3. WEEPING EASTERN WHITE PINE

	443-37	Plant from George L. Ehrle. Garden collected.
	538-2004	Plant from David Listerman & Associates. Garden collected.

Pinus sylvestris L. PINACEAE - PINE FAMILY
	USDA 2. SCOTS PINE, SCOTCH PINE

	2345-24	Plant from The Morton Arboretum. Garden collected.
	1822-25	Seed from Conyers B. Fleu, Jr., C. B. FLEU N. Garden collected.
	699-28	Seed from Conyers B. Fleu, Jr., C. B. FLEU N. Garden collected.
	275-30	Seed from Johannes Rafn & Son. Garden collected.
	242-60	Seed from Siberian Botanical Garden of Tomsk State University. Garden collected.
	219-77	Plant from Vans Pines, Inc. Garden collected.
	469-80	Seed from Institut for dendrologi og planteskoledrift Norges landbrukshogskole (pre-1986). Wild collected Hordeland: Roldal, Norway.
	279-81	Seed from Botanical Garden and Museum, University of Oslo. Wild collected Akershus, Baerum, Kalvoga, Norway.
	307-81	Seed from Chinese Academy of Forestry, Research Institute of Forestry. Wild collected, Jilin Province, China (Zhonghua). Habitat: cold temperate region of NE China.
	213-82	Seed from Botanical Garden, University of Helsinki. Wild collected Luhanka, Hakanen, Etela-Hame Province, Finland.
	273-88	Seed from John Silba. Wild collected site not noted, Mongolia.
	57-90	Plant from Zelenka Nursery, Inc. Garden collected.
	221-93	Seed from 1993 Expedition to Russia (Gorno-Altai) Chicago BG, Holden Arb, Minn. Landsc. Arb, Mo. BG, & Morton Arb. Wild collected by Peter J. van der Linden, The Morton Arboretum along the Katun River a few km. south of Chemal, Gorno-Altayskaya Autonomous Region, Russia. Habitat: on rock outcrop on a sw-facing slope in meadow.
	73-2006	Plant from Bountiful Farms. Garden collected.
	121-U	Unknown from unknown. Unknown collected.

Pinus sylvestris 'Gold Coin' PINACEAE - PINE FAMILY
	USDA 2. GOLD COIN SCOTS PINE

	312-2006	Plant from Rich's Foxwillow Pines. Garden collected.

Pinus sylvestris var. hamata Steven PINACEAE - PINE FAMILY
	USDA 2. HAMATA PINE

	7-2002	Seed from Botanic Garden of the Chicago Horticultural Society. Wild collected by unknown at Kartli, surrounding Tbilisi vil. Betania, Georgia. Habitat: mixed forest.

Pinus sylvestris 'Hillside Creeper' PINACEAE - PINE FAMILY
	USDA 3. HILLSIDE CREEPER SCOTS PINE

	118-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Pinus sylvestris 'Sherwood' PINACEAE - PINE FAMILY
	USDA 3. SHERWOOD SCOTS PINE

	119-2005	Plant from Rich's Foxwillow Pines. Garden collected.

Pinus tabulaeformis Hort. ex Carriere PINACEAE - PINE FAMILY
	USDA 5. CHINESE HARD PINE

	181-83	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Garden collected.
	50-85	Seed from Missouri Botanical Gardens. Wild collected by Beijing Botanical Garden, Botanical Institute of the Chinese Academy from an unspecified site, Ning Cheng County, Nei Mongol Zizhiqu Autonomous Region, China (Zhonghua). Habitat: cinnamon soil and wind-blown sand soil.
	350-86	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Wild collected, Russian S.F.S.R., U.S.S.R.

Pinus thunbergii Parl. PINACEAE - PINE FAMILY
	USDA 5. JAPANESE BLACK PINE, BLACK PINE

	10-2007	Graft from The Morton Arboretum. From plant of known wild origin collected by Barry Yinger along road in northwest corner of Taeyonpyong Island. Ongjin Gun. Sonnim Myon., Kyonggi-do Province, Republic of Korea. Habitat: dry sunny, cut-over hillside within sight of ocean taeyonpyong.

Pinus virginiana Mill. PINACEAE - PINE FAMILY
	USDA 5. VIRGINIA PINE

	379-47	Plant from A. G. Johnson. Garden collected.

Platycarya strobilacea Siebold & Zucc. JUGLANDACEAE - WALNUT FAMILY
	USDA 6. WINGNUT

	552-96	Seed from Magnolia Society c/o Mr. Ray Tessmer, seed chairman. Wild collected around Chollipo, Sowon-Myon, Taean-Gun, South Ch'ungch'ong Province, Republic of Korea.

Platycladus orientalis (L.) Franco CUPRESSACEAE - CYPRESS FAMILY
	USDA 6. ORIENTAL ARBORVITAE

	168-53	Seed from Missouri Botanical Gardens. Wild collected by D. P. Kirkham, Missouri Botanical Gardens Po-un, North Ch'ungch'ong Province, Republic of Korea.
	521-55	Plant from U.S.D.A., Plant Introduction Station/Garden. Garden collected in Parliamentary Gardens in Kabul, Afghanistan.
	117-88	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected vicinity of Beijing (Peking), China (Zhonghua).
	289-90	Seed from Staff, The Morton Arboretum. Wild collected near summit of Tien Long Shan (Mountain of the Heavenly Dragons) near Taiyuan, Shanxi Province, China (Zhonghua).
	262-2002	Seed from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. Wild collected by Tiecheng Cui, Xian Botanical Garden Kangjiaping, Ningxi Forest Preserve, Ningshan County, Shaanxi Province, China (Zhonghua). Habitat: on 5 deg. n-facing slope.

Polygonatum biflorum (Walter) Elliott (HERBACEOUS) RUSCACEAE - LILY-OF-THE-VALLEY FAMILY
	USDA 3. SOLOMON'S SEAL

	486-96	Plant from various commercial sources. Garden collected.

Polygonatum biflorum var. commutatum (Schult. & Schult.f.) Morong (HERBACEOUS) RUSCACEAE - LILY-OF-THE-VALLEY FAMILY
	USDA 4. GREATER SOLOMON'S SEAL, SOLOMON'S SEAL

	981-2004	Plant from various commercial sources. Garden collected.

Polygonatum humile Maxim. (HERBACEOUS) RUSCACEAE - LILY-OF-THE-VALLEY FAMILY
	USDA 5. DWARF SOLOMON'S SEAL, SOLOMON'S SEAL

	163-96	Plant from various commercial sources. Garden collected.

Polygonatum odoratum (Mill.) Druce (HERBACEOUS) RUSCACEAE - LILY-OF-THE-VALLEY FAMILY
	USDA 4. FRAGRANT SOLOMON'S SEAL

	443-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected on Yunmeng Shan (Dense Cloud Mountain), Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: in dense shade in woods at the base of a n-facing slope in rich organic soils well above stream bed.

Polygonatum odoratum 'Variegatum' (HERBACEOUS) RUSCACEAE - LILY-OF-THE-VALLEY FAMILY
	USDA 4. VARIEGATED FRAGRANT SOLOMON'S SEAL

	499-96	Plant from various commercial sources. Garden collected.

Polygonum affine 'Border Jewel' POLYGONACEAE - BUCKWHEAT FAMILY
	USDA 4. BORDER JEWEL HIMALAYAN FLEECE FLOWER

	281-2001	Plant from various commercial sources. Garden collected.

Polystichum acrostichoides (Michx.) Schott (HERBACEOUS) DRYOPTERIDACEAE - WOOD FERN FAMILY
	USDA 4. CHRISTMAS FERN, DAGGER FERN

	309-95	Plant from various commercial sources. Garden collected.
	420-96	Plant from various commercial sources. Garden collected.

Pontederia cordata L. (HERBACEOUS) PONTEDERIACEAE - PICKEREL WEED FAMILY
	USDA 3 - 11. PICKEREL-WEED, PICKERELWEED

	1408-2004	Plant from various commercial sources. Garden collected.

Populus alba L. SALICACEAE - WILLOW FAMILY
	USDA 3. WHITE POPLAR

	1336-22	Plant from Naperville Nurseries. Garden collected.
	246-84	Cutting from The Morton Arboretum. Garden collected.
	57-93	Cutting from The Morton Arboretum. Garden collected.
	124-U	Unknown from unknown. Unknown collected.

Populus angustifolia James SALICACEAE - WILLOW FAMILY
	USDA 3. NARROW-LEAVED COTTONWOOD, NARROWLEAF COTTONWOOD

	83-93	Plant from The Morton Arboretum Research Program. Wild collected by Richard Hootman along NM 161 just east of exit 22 off I-25, 0.5 mile south of Watrous, Mora County, New Mexico. Habitat: wetland.

Populus x canescens (Aiton) Sm. SALICACEAE - WILLOW FAMILY
	USDA 5. GRAY POPLAR

	411-83	Cutting from The Morton Arboretum. Garden collected.

Populus deltoides Marshall SALICACEAE - WILLOW FAMILY
	USDA 2. EASTERN COTTONWOOD

	378-71	Cutting from The Morton Arboretum. Garden collected.
	377-83	Seed from Staff, The Morton Arboretum. Wild collected west side of Lake Defiance in Moraine Hills State Park, Mc Henry County, Illinois.
	221-90	Plant from The Morton Arboretum Research Program. Garden collected.
	125-U	Unknown from unknown. Unknown collected.

Populus grandidentata Michx. SALICACEAE - WILLOW FAMILY
	USDA 3. BIG-TOOTHED ASPEN, BIGTOOTH ASPEN

	153-89	Plant from The Morton Arboretum Research Program. Garden collected along the northwest fenceline of Fisher Field Research Area of the Morton Arboretum, Du Page County, Illinois. Habitat: fencerow.
	126-U	Unknown from unknown. Unknown collected.

Populus heterophylla L. SALICACEAE - WILLOW FAMILY
	USDA 5. SWAMP COTTONWOOD

	144-91	Cutting from Staff, The Morton Arboretum. Wild collected by Peter J. van der Linden along north side of Kankakee River in Momence Wetlands State Preserve, Kankakee County, Illinois. Habitat: floodplain forest.

Populus koreana Rehder SALICACEAE - WILLOW FAMILY
	USDA 5. KOREAN POPLAR

	619-72	Cutting from The Morton Arboretum. Garden collected.
	212-96	Plant from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition at Ping Shan, Heilongjiang Sheng Province, China (Zhonghua). Habitat: disturbed woodland.
	562-2000	Cutting from The Morton Arboretum. Garden collected.

Populus maximowiczii Henry SALICACEAE - WILLOW FAMILY
	USDA 5. JAPANESE POPLAR

	35-88	Plant from Randy Smith, University of Wisconsin. Garden collected.
	156-92	Cutting from The Morton Arboretum. Garden collected.
	118-96	Plant from The Morton Arboretum Research Program. Wild collected, Liaoning Province, China (Zhonghua).

Populus sargentii Dode SALICACEAE - WILLOW FAMILY
	USDA 4. PLAINS COTTONWOOD

	851-56	Cutting from Robert E. Moore, Glenmore Arboretum. Garden collected.
	302-80	Cutting from The Morton Arboretum. Garden collected.

Populus tremuloides Michx. SALICACEAE - WILLOW FAMILY
	USDA 1. QUAKING ASPEN, AMERICAN ASPEN, GOLDEN ASPEN, POPPLE, TREMBLING ASPEN, TREMBLING POPLAR

	374-83	Plant from Staff, The Morton Arboretum. Wild collected just south of Beaver Creek, Boone County, Illinois. Habitat: fencerow.
	668-2004	Plant from Garden Prairie Nursery. Garden collected.
	557-2005	Plant from Mariani Landscape/Design Build Maintenance. Garden collected.

Potentilla fruticosa 'UMan' Patent 12258 ROSACEAE - ROSE FAMILY
	USDA 2. MANGO TANGOÔ

	462-2004	Plant from Acorn Farms. Garden collected.
	238-2006	Plant from Beaver Creek Nursery, Inc. Garden collected.

Prinsepia sinensis (Oliv.) Oliv. ex Bean ROSACEAE - ROSE FAMILY
	USDA 3. CHERRY PRINSEPIA

	726-79	Cutting from The Morton Arboretum. Garden collected.
	27-92	Seed from Forest Botanical Garden of Heilongjiang Province. Garden collected.
	238-93	Seed from Matthaei Botanical Gardens, The University of Michigan. From plant of known wild origin collected from Ussuri Reserve Research Station, Rossiya (Russia) Republic, Russia.

Prunus americana Marshall ROSACEAE - ROSE FAMILY
	USDA 6. WILD PLUM

	544-64	Seed from Staff, The Morton Arboretum. Wild collected by Floyd A. Swink in Red Rock Park in Denver, Colorado.
	556-74	Plant from Staff, The Morton Arboretum. Wild collected by Richard R. Wason from the east woods (King's Grove) of the Morton Arboretum, Du Page County, Illinois.
	739-79	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn 3/4 mi. S. of Lake Le-Aqua-Na State Park, Stephenson County, Illinois.
	202-94	Plant from Klehm Nursery. Garden collected.
	391-2000	Plant from Possibility Place Nursery, Inc. Garden collected.
	1050-2005	Plant from Possibility Place Nursery. Garden collected.

Prunus angustifolia Marshall ROSACEAE - ROSE FAMILY
	USDA 6. CHICKASAW PLUM

	843-80	Plant from Staff, The Morton Arboretum. Wild collected by Ross C. Clark 0.4 mi east of Baxter Co. line, Stone County, Arkansas. Habitat: wild pop. along AR 14 R.O.W..

Prunus armeniaca var. ansu Maxim. ROSACEAE - ROSE FAMILY
	USDA 5. APRICOT

	131-60	Seed from The Morton Arboretum. Garden collected.

Prunus avium L. ROSACEAE - ROSE FAMILY
	USDA 4. SWEET CHERRY, MAZZARD CHERRY

	351-61	Plant from Edward H. Scanlon & Assoc. Garden collected.
	202-83	Seed from Bereich Botanik und Arboretum des Museums fur Naturkunde der Humboldt-Universitat zu Berlin. Wild collected Dermbach/Rn. Bad Salzungen, Suhl District, German Democratic Republic.
	496-84	Seed from Botanic Garden of Sofia University 'St. Kliment Ohridski'. Wild collected diverse regions, Bulgaria.

Prunus 'Berry' ROSACEAE - ROSE FAMILY
	USDA 5. CASCADE SNOWÔ

	150-2005	Plant from J. Frank Schmidt & Son Co. Garden collected.

Prunus besseyi Bailey ROSACEAE - ROSE FAMILY
	USDA 3. WESTERN SAND CHERRY

	531-96	Division from The Morton Arboretum. From plant of known wild origin collected 8 mi. south of Keota at Pawnee Buttes, Pawnee National Grassland, Weld County, Colorado.

Prunus buergeriana Miq. ROSACEAE - ROSE FAMILY
	USDA 6. JAPANESE BIRD CHERRY

	111-81	Seed from Aritaki Arboretum. Wild collected near Oshino-Mura, Yamanashi-ken Prefecture, Chubu Region, Japan.

Prunus fruticosa Pall. ROSACEAE - ROSE FAMILY
	USDA 4. GROUND CHERRY

	182-97	Cutting from The Morton Arboretum. From plant of known wild origin collected Prioksko-Terrasny State Nature Preserve near Oka R. 100 km south of Moscow, Russian S.F.S.R., U.S.S.R. Habitat: most northern steppe near the taiga.

Prunus grayana Maxim. ROSACEAE - ROSE FAMILY
	USDA 6. JAPANESE BIRD CHERRY

	112-81	Seed from Aritaki Arboretum. Wild collected near Oshino-mura, Yamanashi-ken Prefecture, Chubu Region, Japan.
	157-86	Cutting from The Morton Arboretum. Garden collected.

Prunus incana (Pall.) Batsch ROSACEAE - ROSE FAMILY
	USDA 6. WILLOW CHERRY

	247-90	Cutting from The Morton Arboretum. Garden collected.

Prunus incisa Thunb. ROSACEAE - ROSE FAMILY
	USDA 6. FUJI CHERRY

	113-81	Seed from Aritaki Arboretum. Wild collected near Oshino-mura, Yamanashi-ken Prefecture, Chubu Region, Japan.
	150-93	Cutting from The Morton Arboretum. From plant of known wild origin collected near Oshino-mura, Yamanashi-ken Prefecture, Chubu Region, Japan.

Prunus insititia L. ROSACEAE - ROSE FAMILY
	USDA 5. DAMSON, BULLACE

	140-89	Seed from Research Institute of Ecology and Botany Hungarian Academy of Sciences Botanical Garden. Wild collected in the Eperjes-Tokaji Mountains, Borsod-Abauj-Zemplen County, Hungary. Habitat: oakwoods and sunny slopes on andesite rocks.

Prunus laurocerasus L. ROSACEAE - ROSE FAMILY
	USDA 7. CHERRY-LAUREL

	365-93	Cutting from U.S.D.A., Plant Introduction Station/Garden. Wild collected enroute to Tbilisi, Georgian S.S.R., U.S.S.R.

Prunus maackii Rupr. ROSACEAE - ROSE FAMILY
	USDA 2. AMUR CHERRY

	240-93	Seed from Matthaei Botanical Gardens, The University of Michigan. Wild collected by David Michener, Matthaei Botanical Gardens, The University of Michigan along the Smolny River south of Anisimovka village, Rossiya (Russia) Republic, Russia. Habitat: from rich deciduous and coniferous forests.
	299-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. Wild collected, Changbai County, Jilin Province, China (Zhonghua). Habitat: along rocky edge of road along stream on 45 degree slope.
	33-2007	Plant from Bailey Nurseries, Inc. Garden collected.

Prunus mahaleb L. ROSACEAE - ROSE FAMILY
	USDA 6. MAHALEB CHERRY

	85-79	Seed from Jardin Botanique. Wild collected, Haute-Savoie Department, France.
	161-83	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected, Haute-Savoie Department, France.

Prunus maximowiczii Rupr. ROSACEAE - ROSE FAMILY
	USDA 5. MIYAMA CHERRY

	400-38	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Garden collected.
	290-95	Cutting from The Morton Arboretum. Garden collected.
	35-2000	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Okaya City west of Tokyo, Nagano-ken Prefecture, Chubu Region, Japan.

Prunus munsoniana Wight & Hedrick ROSACEAE - ROSE FAMILY
	USDA 6. WILD GOOSE PLUM

	185-66	Plant from Bernheim Arboretum and Research Forest The Isaac W. Bernheim Foundation. Wild collected site not noted, Kentucky.

Prunus padus L. ROSACEAE - ROSE FAMILY
	USDA 4. EURASIAN BIRD CHERRY, BIRD CHERRY, EUROPEAN BIRD CHERRY, MAY DAY SHRUB, MAY DAY TREE, MAY TREE

	355-83	Cutting from The Morton Arboretum. From plant of known wild origin collected by Joseph F. Rock in Maerhku valley, China (Zhonghua).

Prunus pensylvanica L.f. ROSACEAE - ROSE FAMILY
	USDA 2. PIN CHERRY

	527-80	Seed from Montreal Botanic Garden. Wild collected site not noted, Canada.

Prunus sargentii Rehder ROSACEAE - ROSE FAMILY
	USDA 5. SARGENT'S CHERRY

	1956-28	Seed from Arnold Arboretum of Harvard University. Garden collected.
	673-59	Graft from The Morton Arboretum. Garden collected.
	684-59	Graft from The Morton Arboretum. Garden collected.
	20-86	Plant from The Morton Arboretum Research Program. Wild collected by near Morioka from ground of Tohoku Branch of the Forest Experiment Station, Iwate Prefecture, Tohoku-chiho Region, Japan.
	68-2003	Plant from Charles J. Fiore Company, Inc. Garden collected.

Prunus sargentii 'Columnaris' ROSACEAE - ROSE FAMILY
	USDA 4. COLUMNAR SARGENT'S CHERRY, COLUMNAR SARGENT CHERRY

	151-2005	Plant from J. Frank Schmidt & Son Co. Garden collected.

Prunus sargentii 'JFS-KW58' ROSACEAE - ROSE FAMILY
	USDA 4. PINK FLAIRÒ

	152-2005	Plant from J. Frank Schmidt & Son Co. Garden collected.

Prunus sargentii 'Rancho' ROSACEAE - ROSE FAMILY
	USDA 5. RANCHO SARGENT'S CHERRY

	34-2007	Plant from Bailey Nurseries, Inc. Garden collected.

Prunus serotina Ehrh. ROSACEAE - ROSE FAMILY
	USDA 4. BLACK CHERRY, WILD BLACK CHERRY

	725-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg 3 m. N. of Plainfield on W. side of DuPage R. at ll9th St., Will County, Illinois.
	127-U	Unknown from unknown. Unknown collected.

Prunus spinosa L. ROSACEAE - ROSE FAMILY
	USDA 5. SLOE, BLACKTHORN

	28-83	Seed from Botanischer Garten der Friedrich-Schiller-Universitat. Wild collected at Martinsroda/Orlamunde, Gera District, German Democratic Republic.
	162-83	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected various sites in Geneve/Valais cantons, Switzerland or Ain dept., France (exact sites not noted), France.
	112-84	Seed from Swedish University of Agricultural Sciences, Department of Floriculture & Horticultural Sciences. Wild collected near Lenstad on Oland Island, Kalmar County, Sweden.

Prunus ssiori F.Schmidt ROSACEAE - ROSE FAMILY
	USDA 5. CHERRY

	248-90	Cutting from The Morton Arboretum. From plant of known wild origin collected southern Kuril Islands, Russian S.F.S.R., U.S.S.R.

Prunus subhirtella 'Pendula' ROSACEAE - ROSE FAMILY
	USDA 5. WEEPING HIGAN CHERRY

	63-53	Plant from Wyoming Nurseries. Garden collected.

Prunus tenella Batsch ROSACEAE - ROSE FAMILY
	USDA 2. DWARF RUSSIAN ALMOND

	260-50	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Garden collected.

Prunus triloba Lindl. ROSACEAE - ROSE FAMILY
	USDA 3. FLOWERING ALMOND

	1159-57	Cutting from The Morton Arboretum. Garden collected.
	454-83	Cutting from The Morton Arboretum. Garden collected.

Prunus virginiana L. ROSACEAE - ROSE FAMILY
	USDA 2. CHOKE CHERRY

	737-79	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along Devil's Backbone Road, Ogle County, Illinois.
	507-85	Seed from Rivendell Botanic Garden. Wild collected, La Salle County, Illinois.

Prunus x yedoensis 'Shidare Yoshino' ROSACEAE - ROSE FAMILY
	USDA 5. WEEPING YOSHINO CHERRY

	566-66	Graft from Arnold Arboretum of Harvard University. Garden collected.
	199-69	Graft from The Morton Arboretum. Garden collected.

Pseudotsuga menziesii 'Pendula' PINACEAE - PINE FAMILY
	USDA 5. WEEPING DOUGLAS-FIR

	67-2003	Plant from Charles J. Fiore Company, Inc. Garden collected.

Pterocarya hupehensis Skan JUGLANDACEAE - WALNUT FAMILY
	USDA 6. HUPEH WINGNUT

	95-87	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected Qinling Mountain, northeastern section, China (Zhonghua). Habitat: mountain.

Pterocarya rhoifolia Siebold & Zucc. JUGLANDACEAE - WALNUT FAMILY
	USDA 6. JAPANESE WINGNUT

	167-78	Seed from Botanical Garden, Tohoku University. Garden collected.

Pteroceltis tatarinowii Maxim. CANNABACEAE - HEMP FAMILY
	USDA 5. BLUE-SANDALWOOD, PTEROCELTIS, WINGED-HACKBERRY

	157-81	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Garden collected.
	417-2003	Plant from United States National Arboretum. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 2002 Shanxi China Expedition Shu Pi Gou, Mang He Zhen, Yang Cheng Xian County, Shanxi Province, China (Zhonghua). Habitat: mesic mixed deciduous forest on 40 deg. sw-facing slope in rich humus.

Pterostyrax corymbosa Siebold & Zucc. STYRACACEAE - STORAX FAMILY
	USDA 7. LITTLE EPAULET TREE

	763-54	Seed from Mt. Airy Forest and Arboretum Cincinnati Park Board. Garden collected.

Pterostyrax hispida Siebold & Zucc. STYRACACEAE - STORAX FAMILY
	USDA 7. FRAGRANT EPAULET TREE

	108-58	Seed from Botanical Gardens, University of Tokyo. Garden collected.
	229-78	Seed from Botanischer Garten der Johann Wolfgang Goethe-Universitat. Garden collected.
	36-2008	Seed from Howick Arboretum. Wild collected by Howick Arboretum 2007 Japan Expedition (Brownless, Clark, Jamieson, McNamara & Marrocco) at Yamakita, Kanagawa Province, Japan. Habitat: full sun on dry stony light loam on steep nw-facing mountainside of open broadleaf woodland.

Purshia tridentata (Pursh) DC. ROSACEAE - ROSE FAMILY
	USDA 6. ANTELOPE BRUSH

	406-86	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg along US-50, Gunnison County, Colorado. Habitat: dry rangeland.

Pyracantha coccinea M.Roem. ROSACEAE - ROSE FAMILY
	USDA 7. FIRETHORN

	829-57	Plant from Alton State Hospital. Garden collected.
	683-80	Seed from State Nikita Botanical Gardens. Wild collected in Tauria, Crimean Region, Ukrainian S.S.R., U.S.S.R.

Pyrus amygdaliformis Vill. ROSACEAE - ROSE FAMILY
	USDA 6. PEACH-LEAVED PEAR

	268-2000	Seed from Orto Botanico dell'Universita Botanical Garden of the University of Siena. Wild collected by unknown Rospatoio/Casciano de Murlo, Siena Province, Italy. Habitat: along wood edges.

Pyrus betulaefolia Bunge ROSACEAE - ROSE FAMILY
	USDA 5. BIRCH-LEAVED PEAR

	38-85	Graft from The Morton Arboretum. From plant of known wild origin collected in 1917 in northern part, China (Zhonghua).
	272-86	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Wild collected northeastern mountains, China (Zhonghua).

Pyrus calleryana Decne. ROSACEAE - ROSE FAMILY
	USDA 6. CALLERY PEAR

	922-26	Seed from Chinese Nurseries Ltd. Garden collected.
	1641-35	Plant from Ernest J. Palmer. Garden collected.
	575-66	Graft from Peavy Arboretum. From plant of known wild origin collected by unknown central, China (Zhonghua).
	39-85	Graft from The Morton Arboretum. From plant of known wild origin collected in 1917 from central part, China (Zhonghua).

Pyrus calleryana 'Cambridge' ROSACEAE - ROSE FAMILY
	USDA 4. CAMBRIDGE CALLERY PEAR

	153-2005	Plant from J. Frank Schmidt & Son Co. Garden collected.

Pyrus calleryana 'Trinity' Patent 4530 ROSACEAE - ROSE FAMILY
	USDA 5. TRINITY CALLERY PEAR

	210-2004	Plant from A. Brown & Sons Nursery. Garden collected.

Pyrus communis L. ROSACEAE - ROSE FAMILY
	USDA 5. COMMON PEAR

	460-64	Graft from Mel Westwood, Oregon State University. Garden collected.
	264-83	Seed from Kaunas Botanical Garden of the Botanical Institute. Wild collected in Iesia River Nature Reservation near Kaunas, Lithuanian S.S.R., U.S.S.R.
	606-83	Seed from Botanical Garden of Academy of Sciences of Armenian S.S.R. Wild collected, Armenian S.S.R., U.S.S.R. Habitat: Vegetatio ruderalis.

Pyrus 'Edgewood' Patent 10151 ROSACEAE - ROSE FAMILY
	USDA 5. EDGEWOOD PEAR

	235-2006	Plant from Beaver Creek Nursery, Inc. Garden collected.

Pyrus elaeagrifolia Pall. ROSACEAE - ROSE FAMILY
	USDA 5. OLEASTER PEAR

	215-90	Bud from The Morton Arboretum. Garden collected.
	312-2003	Bud from The Morton Arboretum. From plant of known wild origin collected by C. G. Woodbridge at Cankaya, Turkey.

Pyrus fauriei 'Westwood' ROSACEAE - ROSE FAMILY
	USDA 4. KOREAN SUNÔ

	236-2006	Plant from Beaver Creek Nursery, Inc. Garden collected.

Pyrus pashia D.Don ROSACEAE - ROSE FAMILY
	USDA 5. HIMALAYAN PEAR

	2337-26	Seed from Arnold Arboretum of Harvard University. Wild collected by Joseph F. Rock banks of Peshwekiang, Wantsang gomba, China (Zhonghua). Habitat: arid gorges.
	284-93	Graft from The Morton Arboretum. From plant of known wild origin collected by Joseph F. Rock banks of Peshwekiang, Wantsang gomba, China (Zhonghua). Habitat: arid gorges.
	225-98	Graft from The Morton Arboretum. From plant of known wild origin collected by Joseph F. Rock along Tao River near Choniku valley, China (Zhonghua).

Pyrus pyraster Burgsd. ROSACEAE - ROSE FAMILY
	USDA 4. WILD PEAR

	89-72	Plant from U.S.D.A., Plant Introduction Station/Garden. Wild collected by unknown, Macedonia Republic, Yugoslavia.

Pyrus salicifolia Pall. ROSACEAE - ROSE FAMILY
	USDA 5. WILLOW-LEAVED PEAR

	141-89	Seed from Research Institute of Ecology and Botany Hungarian Academy of Sciences Botanical Garden. Wild collected in Noravank valley, Armenian S.S.R., U.S.S.R. Habitat: xeric, themophilous bush & open wood on volcanic slopes.

Pyrus serrulata Rehder ROSACEAE - ROSE FAMILY
	USDA 6. PEAR

	443-72	Graft from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson at Ichang, Hubei Province, China (Zhonghua).
	151-83	Graft from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson at Ichang, Hubei Province, China (Zhonghua).

Pyrus ussuriensis Maxim. ROSACEAE - ROSE FAMILY
	USDA 4. USSURIAN PEAR, HARBIN PEAR

	2490-22	Plant from Arnold Arboretum of Harvard University. From plant of known wild origin collected by Ernest H. Wilson, Arnold Arboretum of Harvard University from an unspecified site, Country Unknown.
	2497-22	Plant from Arnold Arboretum of Harvard University. From plant of known wild origin collected by Ernest H. Wilson, Arnold Arboretum of Harvard University, Country Unknown.
	1928-23	Plant from Arnold Arboretum of Harvard University. From plant of known wild origin collected by Ernest H. Wilson, Arnold Arboretum of Harvard University from an unspecified site (Champali?), Country Unknown.
	1931-23	Plant from Arnold Arboretum of Harvard University. From plant of known wild origin collected by Ernest H. Wilson, Arnold Arboretum of Harvard University, Japan.
	511-25	Graft from Arnold Arboretum of Harvard University. Garden collected.
	1565-25	Seed from Munden Botanic Institute. Garden collected.
	2367-26	Seed from Arnold Arboretum of Harvard University. Garden collected.
	942-35	Graft from Arnold Arboretum of Harvard University. Garden collected.
	464-64	Graft from Mel Westwood, Oregon State University. From plant of known wild origin collected by Frank N. Meyer, United States Department of Agriculture at Lowanyu, near Tsunhwachow in former Chihli Province, Hebei Province, China (Zhonghua).
	118-83	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Wild collected near Raeonash, Russian S.F.S.R., U.S.S.R.
	152-83	Graft from The Morton Arboretum. Garden collected.
	153-83	Graft from The Morton Arboretum. Garden collected.
	216-90	Bud from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson from an unspecified site, Country Unknown.
	290-93	Graft from The Morton Arboretum. Garden collected by Ernest H. Wilson.
	291-93	Graft from The Morton Arboretum. Garden collected by Ernest H. Wilson.
	293-93	Graft from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson from an unspecified site (Champali?), Country Unknown.
	294-93	Graft from The Morton Arboretum. From plant of known wild origin collected by Ernest H. Wilson from an unspecified site, Country Unknown.
	341-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: disturbed woodland edge.
	133-U	Unknown from unknown. From plant of known wild origin collected by Ernest H. Wilson, Arnold Arboretum of Harvard University.

Pyrus ussuriensis 'MorDak' ROSACEAE - ROSE FAMILY
	USDA 3. PRAIRIE GEMÒ

	237-2006	Plant from Beaver Creek Nursery, Inc. Garden collected.

Quercus dalechampii Ten. FAGACEAE - BEECH FAMILY
	USDA 7. ITALIAN OAK, DALECHAMP'S OAK

	286-97	Seed from Guy Sternberg, Starhill Forest Arboretum. Wild collected in Zemplen Mountains, Edobeluge Nord 3 km., Hungary.

Quercus gambelii Nutt. FAGACEAE - BEECH FAMILY
	USDA 5. GAMBEL'S OAK, GAMBEL OAK

	556-32	Seed from Central Experimental Farm Botanical Garden and Arboretum Ottawa Research Station, Ornamentals Section. Garden collected.
	145-75	Seed from Staff, The Morton Arboretum. Wild collected, Tiller County, Colorado.
	488-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn from Price Canyon near US-6, Carbon County, Utah. Habitat: upper canyon slopes.

Quercus georgiana M.A.Curtis FAGACEAE - BEECH FAMILY
	USDA 6. STONE MOUNTAIN OAK, GEORGIA OAK

	49-2002	Seed from Guy Sternberg, Starhill Forest Arboretum. Wild collected by unknown on Stone Mountain, De Kalb County, Georgia.

Quercus hartwissiana Stev. FAGACEAE - BEECH FAMILY
	USDA 6. HARTWISS' OAK

	27-95	Seed from Aytekin Ertas, Istanbul University Orman Fakultesi Silvikultur Ara Bilim Dah. Wild collected by unknown on the northwest Black Sea area near Yenice Cit dere, Zonguldak Province, Black Sea Region, Turkey.

Quercus ilicifolia Wangenh. FAGACEAE - BEECH FAMILY
	USDA 5. BEAR OAK, SCRUB OAK

	260-93	Plant from Reeseville Ridge Nursery. Wild collected in the southeastern part of Monongahela National Forest, West Virginia.

Quercus mongolica Fisch. ex Turcz. FAGACEAE - BEECH FAMILY
	USDA 5. MONGOLIAN OAK

	343-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yunmeng Shan (Dense Cloud Mountain), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: on n-facing slope in dry loose friable soil.
	403-97	Seed from Midwest Plant Collecting Collaborative (MWPCC) 1997 Russia Far East Expedition. Wild collected, Rossiya (Russia) Republic, Russia. Habitat: on 15 degree n-facing slope in river valley.

Quercus muhlenbergii Engelm. FAGACEAE - BEECH FAMILY
	USDA 5. CHINKAPIN OAK, CHINQUAPIN OAK, YELLOW CHESTNUT OAK

	313-29	Plant from Charles C. Deam. Garden collected.
	661-32	Plant from Arnold Arboretum of Harvard University. Garden collected.
	704-46	Seed from Staff, The Morton Arboretum. Wild collected by Roy M. Nordine site not noted, Indiana.
	570-78	Seed from Staff, The Morton Arboretum. Wild collected by Connor B. Shaw in campground north of the Kankakee River under spont. plants 1/2 mile west of the Kankakee Co. line, Will County, Illinois.
	843-79	Plant from Possibility Place Nursery, Inc. Garden collected from Kankakee River State Park, Kankakee County, Illinois.
	549-82	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn in Oswego Cemetery, Kendall County, Illinois.
	550-82	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along the Fox River in Silver Springs State Park, Kendall County, Illinois. Habitat: floodplain.
	587-83	Seed from Staff, The Morton Arboretum. Wild collected by Pat Kelsey & Ed Hedborn near the Burlington Northern Railroad at Millington, Kendall County, Illinois. Habitat: wet, marshy area.
	438-86	Plant from Alice Burkman. Wild collected near Plano, Kendall County, Illinois.
	122-88	Plant from The Morton Arboretum Research Program. Garden collected.
	215-91	Seed from The Morton Arboretum. Wild collected by Peter J. van der Linden 8 mi. east of Nebraska City, south of IA 2, on top of east bluff overlooking Missouri River in Waubonsie State Park, Fremont County, Iowa. Habitat: loess hill ridge top black, bur, chinquapin oak savanna.
	220-91	Seed from The Morton Arboretum. Wild collected by Peter J. van der Linden 1.4-2 mi. south of Rulo in Nature Conservancy Rulo Bluffs Preserve, Richardson County, Nebraska. Habitat: n-facing, ridgetop, hill prairie.
	65-92	Plant from The Morton Arboretum Research Program. Wild collected by Ken Konsis from a spontaneous tree in Forest Glen County Preserve near Westville, Vermilion County, Illinois.
	474-2001	Seed from The Morton Arboretum. Wild collected by Kunso Kim & Ed Hedborn in Warren Dunes State Park, east side of youth campground, Berrien County, Michigan. Habitat: dry sandy soil, back-dune open savanna.
	1089-2004	Plant from Klehm Nursery. Garden collected.

Quercus petraea (Matt.) Liebl. FAGACEAE - BEECH FAMILY
	USDA 5. DURMAST OAK, SESSILE OAK

	35-90	Seed from Lesny Zaklad Doswiadczalny Arboretum Szkola Glowna Gospodarstwa Wiejskiego, Ak. Rosnicza w Warszawie. Wild collected on grounds of Lesny Zaklad Doswiadczalny Arboretum, Poland.
	257-2004	Seed from Arboretum Novy Dvur Slezske semske muzeum Opava Arboretum Novy Dvur of Silezian Museum in Opava. Wild collected by unknown in Jesenicke podhuri Mts. at Lhotka village, near Hranice na Morave, Prerov District, North Moravia Region, Czech Republic. Habitat: mountains.
	498-2005	Plant from Guy Sternberg, Starhill Forest Arboretum. From plant of known wild origin collected near Alten Eichen Hospital, Hamburg, Schelswig-Holstein, Hamburg State, Germany.

Quercus polycarpa Schur FAGACEAE - BEECH FAMILY
	USDA 6. OAK

	258-2004	Seed from Arboretum Novy Dvur Slezske semske muzeum Opava Arboretum Novy Dvur of Silezian Museum in Opava. Wild collected by unknown in Jesenicke podhuri Mts. at Lhotka village, near Hranice na Morave, Prerov District, North Moravia Region, Czech Republic. Habitat: mountains.

Quercus prinoides Willd. FAGACEAE - BEECH FAMILY
	USDA 5. DWARF CHINKAPIN OAK

	742-51	Seed from Julian Steyermark, Field Museum of Natural History. Wild collected northwestern section, Missouri.
	768-54	Seed from Everett C. Logue. Wild collected from State College grounds, Pennsylvania.
	218-77	Seed from The Morton Arboretum. Garden collected.
	326-99	Plant from Nebraska Statewide Arboretum. Wild collected in the Rock Creek bluffs, 3 miles south of Salem, Richardson County, Nebraska. Habitat: bluff top.
	120-2001	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected by unknown southwest of Salem, Richardson County, Iowa.

Quercus shumardii var. schneckii (Britton) Sarg. FAGACEAE - BEECH FAMILY
	USDA 5. SCHNECK'S OAK

	576-40	Plant from University of Kentucky. Wild collected, Union County, Kentucky.
	1219-40	Seed from F. N. B. Agrelius, Kansas State Teachers College. Garden collected.
	215-51	Plant from Siebenthaler Nursery, The Siebenthaler Co. Garden collected.

Quercus wutaishanica Mayr FAGACEAE - BEECH FAMILY
	USDA 6. WUTAI MOUNTAIN OAK, EAST-LIAONING OAK, LIAODUNG OAK, LIAOTONG OAK, LIAOTUNG OAK

	265-90	Seed from Staff, The Morton Arboretum. Wild collected Pangquangou Nature Protection Area, Luliang Shan (Luliang Mountains), Shanxi Province, China (Zhonghua). Habitat: roadside through upland forest.
	333-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yong Xiu Gou (Valley with Beautiful Clouds), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: on steep rocky embankments.
	852-2005	Seed from North America-China Plant Exploration Consortium (NACPEC) 2005 Gansu China Expedition. Wild collected at Xian Jia Wan, Kang Le Shen County, Gansu Province, China (Zhonghua). Habitat: edge of cultivated field above road; full sun 45 deg NE slope, deep rich loam.

Rhamnus erythroxyloides Hoffmanns. RHAMNACEAE - BUCKTHORN FAMILY
	USDA 6. PALLAS'S BUCKTHORN

	147-81	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected Caucasus Mts., Mt. Mashuk, above Pyatigorsk, U.S.S.R. Habitat: Xeric meadow.
	487-82	Plant from Cary Arboretum of the New York Botanical Garden. Wild collected N. Caucasus region, Pyatigorsk, Mt. Maschuk, U.S.S.R.

Rhamnus parvifolia Bunge RHAMNACEAE - BUCKTHORN FAMILY
	USDA 5. LITTLE-LEAVED BUCKTHORN, LITTLELEAF BUCKTHORN

	299-90	Seed from Staff, The Morton Arboretum. Wild collected near Pangquangou Preserve entrance, Shanxi Province, China (Zhonghua). Habitat: disturbed open site.

Rhamnus saxatilis Jacq. RHAMNACEAE - BUCKTHORN FAMILY
	USDA 6. ROCK BUCKTHORN

	208-62	Seed from Belvedere Botanical Garden. Wild collected near Hainburg, Lower Austria State, Austria.

Rhododendron 'April Mist' ERICACEAE - HEATH FAMILY
	USDA 4B. APRIL MIST RHODODENDRON

	103-2004	Plant from Klehm's Song Sparrow Farm and Nursery. Garden collected.

Rhododendron 'Besse Howells' ERICACEAE - HEATH FAMILY
	USDA 5. BESSE HOWELLS RHODODENDRON

	129-2001	Plant from DeGrandchamps Farms. Garden collected.

Rhododendron brachycarpum D.Don ex G.Don ERICACEAE - HEATH FAMILY
	USDA 6. FUJIYAMA RHODODENDRON

	7-98	Seed from Peter Podaras. Wild collected by Heronswood/Cobblewood 1997 Japan/Korea Expedition Heronswood Nursery, Ltd. between 37 d. 47' 53.9" N., 128 d. 34' 11.6 " E and 37 d. 49' 29.0" N. 128 d. 34' 40.4" E., Kangwon-do Province, Republic of Korea. Habitat: along roadside.

Rhododendron 'Calsap' ERICACEAE - HEATH FAMILY
	USDA 4. CALSAP RHODODENDRON

	136-2001	Plant from Rosebay Nursery. Garden collected.
	281-2006	Plant from American Rhododendron Society, Midwest Chapter. Garden collected.

Rhododendron catawbiense f. album (Glass) Rehder ERICACEAE - HEATH FAMILY
	USDA 4. WHITE CATAWBA RHODODENDRON

	567-82	Cutting from The Morton Arboretum. Garden collected.

Rhododendron 'Conemaugh' ERICACEAE - HEATH FAMILY
	USDA 5. CONEMAUGH RHODODENDRON

	354-67	Plant from Klehm Nursery. Garden collected.

Rhododendron dauricum L. ERICACEAE - HEATH FAMILY
	USDA 5. DAHURIAN RHODODENDRON

	241-93	Seed from Matthaei Botanical Gardens, The University of Michigan. Wild collected by David Michener, Matthaei Botanical Gardens, The University of Michigan near summit of Furugelmas Island, Rossiya (Russia) Republic, Russia. Habitat: in low mixed woods in a fog belt.
	343-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected above Jiang Po Lake, at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: scrub community on rocky cliff.

Rhododendron 'Daviesii' ERICACEAE - HEATH FAMILY
	USDA 5. DAVIES AZALEA

	154-67	Plant from Oliver Nurseries. Garden collected.

Rhododendron 'English Roseum' ERICACEAE - HEATH FAMILY
	USDA 4. ENGLISH ROSEUM RHODODENDRON

	43-68	Plant from Klehm Nursery. Garden collected.

Rhododendron 'Faisa' ERICACEAE - HEATH FAMILY
	USDA 5. FAISA RHODODENDRON

	282-2006	Plant from American Rhododendron Society, Midwest Chapter. Garden collected.

Rhododendron flavum (Hoffm.) G.Don ERICACEAE - HEATH FAMILY
	USDA 6. PONTIC AZALEA

	451-60	Seed from Botanical Garden of the University of Amsterdam. Garden collected.
	235-62	Plant from Kallay Brothers Company. Garden collected.

Rhododendron 'Hino-crimson' ERICACEAE - HEATH FAMILY
	USDA 5. HINO-CRIMSON AZALEA

	285-2006	Plant from American Rhododendron Society, Midwest Chapter. Garden collected.

Rhododendron 'Janet Blair' ERICACEAE - HEATH FAMILY
	USDA 5. JANET BLAIR RHODODENDRON

	340-67	Plant from Warren Baldsiefen. Garden collected.
	432-2004	Cutting from The Morton Arboretum. Garden collected.
	528-2005	Cutting from The Morton Arboretum. Garden collected.

Rhododendron japonicum (A.Gray) J.V.Suringar ERICACEAE - HEATH FAMILY
	USDA 6. JAPANESE AZALEA

	450-60	Seed from Botanical Garden of the University of Amsterdam. Garden collected.

Rhododendron micranthum Turcz. ERICACEAE - HEATH FAMILY
	USDA 5. MANCHURIAN RHODODENDRON

	753-27	Plant from Harlan P. Kelsey Nursery Co. Garden collected.
	47-80	Cutting from The Morton Arboretum. Garden collected.
	182-83	Seed from Beijing Botanical Garden, Botanical Institute of the Chinese Academy. Garden collected.
	433-85	Cutting from The Morton Arboretum. Garden collected.
	290-90	Seed from Staff, The Morton Arboretum. Wild collected near summit of Tien Long Shan (Mountain of the Heavenly Dragons) near Taiyuan, Shanxi Province, China (Zhonghua).
	360-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Zhaung Ke (Old Village), Song Shan Forest Preserve, Yanqing County, Beijing Shi Municipality, China (Zhonghua). Habitat: full sun, in seasonally dry stream-deposited soils.
	397-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Guang Ri Tuo (Hill Where Sunrise is Seen), Xiao Long Meng Forest Preserve, Dongling Shan, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: near ridgetop in very dry soils on steep nw-facing slope.

Rhododendron 'Mrs. Charles S. Sargent' ERICACEAE - HEATH FAMILY
	USDA 4. MRS. CHARLES S. SARGENT RHODODENDRON

	166-57	Plant from Fairview Evergreen Nurseries, Inc. Garden collected.

Rhododendron mucronulatum Turcz. ERICACEAE - HEATH FAMILY
	USDA 5. KOREAN RHODODENDRON

	752-27	Plant from Harlan P. Kelsey Nursery Co. Garden collected.
	430-57	Seed from The Morton Arboretum. Garden collected.
	85-58	Seed from The Morton Arboretum. Garden collected.
	128-81	Plant from United States National Arboretum. Wild collected on Mt. Shiratake on Tsushima Island, Nagasaki Prefecture, Kyushu-chiho Region, Japan.
	338-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yunmeng Shan (Dense Cloud Mountain), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: on north facing, dry rocky slope.

Rhododendron x myrtifolium Lodd. ERICACEAE - HEATH FAMILY
	USDA 6. MYRTLE RHODODENDRON

	434-85	Cutting from The Morton Arboretum. Garden collected.

Rhododendron 'Nova Zembla' ERICACEAE - HEATH FAMILY
	USDA 4. NOVA ZEMBLA RHODODENDRON

	137-2001	Plant from Rosebay Nursery. Garden collected.

Rhododendron nudiflorum (L.) Torr. ERICACEAE - HEATH FAMILY
	USDA 4. PINXTER FLOWER, PINK AZALEA

	86-99	Seed from United States National Arboretum. Wild collected at Adkins Arboretum, Caroline County, Maryland.

Rhododendron occidentale (Torr. & Gray) Gray ERICACEAE - HEATH FAMILY
	USDA 7. WESTERN AZALEA

	788-60	Plant from Andrew T. Leiser, Purdue University Department of Horticulture. Garden collected.

Rhododendron 'Parsons Gloriosum' ERICACEAE - HEATH FAMILY
	USDA 4. PARSONS GLORIOSUM RHODODENDRON

	361-67	Plant from Klehm Nursery. Garden collected.

Rhododendron 'P.J.M.' ERICACEAE - HEATH FAMILY
	USDA 4. P.J.M. RHODODENDRON

	47-68	Plant from Klehm Nursery. Garden collected.
	322-2004	Plant from Midwest Groundcovers. Garden collected.

Rhododendron 'P.J.M. Compacta' ERICACEAE - HEATH FAMILY
	USDA 4. P.J.M. COMPACTA RHODODENDRON

	464-2008	Plant from D. Hill Nursery Co. Garden collected.

Rhododendron 'P.J.M. Elite' ERICACEAE - HEATH FAMILY
	USDA 4. P.J.M. ELITE RHODODENDRON

	465-2008	Plant from D. Hill Nursery Co. Garden collected.

Rhododendron 'Roseum Elegans' ERICACEAE - HEATH FAMILY
	USDA 4. ROSE ELEGANT RHODODENDRON, ROSEUM ELEGANS RHODODENDRON

	5-68	Plant from Linderman's Chesterton Nurseries. Garden collected.

Rhododendron 'Roseum Superbum' ERICACEAE - HEATH FAMILY
	USDA 5. ROSEUM SUPERBUM RHODODENDRON

	44-68	Plant from Klehm Nursery. Garden collected.

Rhododendron 'Scarlet Romance' ERICACEAE - HEATH FAMILY
	USDA 5. SCARLET ROMANCE RHODODENDRON

	286-2006	Plant from American Rhododendron Society, Midwest Chapter. Garden collected.

Rhododendron 'Scintillation' ERICACEAE - HEATH FAMILY
	USDA 5. SCINTILLATION RHODODENDRON

	433-2004	Cutting from The Morton Arboretum. Garden collected.
	526-2005	Cutting from The Morton Arboretum. Garden collected.

Rhododendron viscosum (L.) Torr. ERICACEAE - HEATH FAMILY
	USDA 4. SWAMP AZALEA

	278-94	Seed from United States National Arboretum. Wild collected, Suffolk County, New York.

Rhododendron yedoense Maxim. ex Regel ERICACEAE - HEATH FAMILY
	USDA 5. YODOGAWA AZALEA

	802-27	Plant from Harlan P. Kelsey Nursery Co. Garden collected.

Rhododendron 'Zuiderzee' ERICACEAE - HEATH FAMILY
	USDA 6. ZUIDERZEE RHODODENDRON

	252-71	Plant from Royer Greenhouses. Garden collected.

Rhodotypos scandens (Thunb.) Makino ROSACEAE - ROSE FAMILY
	USDA 5. JETBEAD

	775-41	Plant from The Morton Arboretum. Garden collected.
	287-68	Cutting from The Morton Arboretum. Garden collected.
	485-75	Plant from Linderman's Chesterton Nurseries. Garden collected.
	271-85	Cutting from The Morton Arboretum. Garden collected.
	232-94	Division from The Morton Arboretum. Garden collected.
	521-96	Plant from Heronswood Nursery. Garden collected.
	661-2004	Plant from Klyn Nurseries, Inc. Garden collected.
	145-U	Unknown from unknown. Unknown collected.

Rhus chinensis Mill. ANACARDIACEAE - CASHEW FAMILY
	USDA 8. CHINESE SUMAC

	1023-39	Seed from Botanic Garden, Faculty of Agriculture, Hokkaido University. Garden collected.
	180-82	Root Cutting from The Morton Arboretum. Garden collected.
	35-95	Seed from Botanical Garden, University of Helsinki. Wild collected by unknown Baishilazhi Nature Reserve, 35 km north of Kuandian City, Futange, Liaoning Province, China (Zhonghua). Habitat: clearcut area planted with Larix and selectively cut 2nd growth Acer, Betula, Fraxinus, Quercus forest.

Rhus trichocarpa Miq. ANACARDIACEAE - CASHEW FAMILY
	USDA 8. JAPANESE SUMAC

	338-78	Seed from Botanical Garden of the Latvian Academy of Sciences. Wild collected near Tasnoje, Iturup Island, Kuril Island Group, Russian S.F.S.R., U.S.S.R.

Ribes alpinum L. GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 2. ALPINE CURRANT

	400-78	Seed from Botanical Garden, University of Helsinki. Wild collected by Pertti Yotila Etela-Hame: Hattula, Parola, Finland.
	89-79	Seed from Jardin Botanique. Wild collected Bg-St.-Pierre, France.
	579-80	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected Zermatt, Valais Canton, Switzerland.
	139-94	Plant from Bailey Nurseries, Inc. Garden collected.

Ribes alpinum 'Spreg' GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 2. GREEN JEANSÔ

	1283-2004	Plant from Beaver Creek Nursery, Inc. Garden collected.

Ribes americanum Mill. GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 2. AMERICAN BLACK CURRANT

	470-78	Cutting from The Morton Arboretum. From plant of known wild origin collected by W. J. Beal and C. G. Pringle site not noted.
	250-79	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg in Volo Bog northwest of Volo, Lake County, Illinois. Habitat: bog.
	519-82	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn along the Fox River bluff below Oswego Cemetery, Kendall County, Illinois. Habitat: north facing slope.

Ribes aureum Pursh GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 2. GOLDEN CURRANT

	46-81	Seed from Washington Park Arboretum University of Washington. Wild collected in Pass Creek Gorge, Custer County, Idaho.

Ribes cynosbati L. GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 2. PRICKLY GOOSEBERRY

	143-79	Seed from Montreal Botanic Garden. Wild collected, Quebec Province, Canada. Habitat: rocky forests.

Ribes fasciculatum var. chinense Maxim. GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 5. CHINESE CURRANT

	284-82	Cutting from The Morton Arboretum. Garden collected.
	161-2003	Cutting from The Holden Arboretum. Garden collected by unknown between Satan Dong and Sonae Dong on Taechong Island, Taechong-Myon, Ongjin Gun, Kyonggi Province, Republic of Korea. Habitat: edge of clearing in fence row.

Ribes mandshuricum (Maxim.) Komar. GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 6. MANCHURIAN CURRANT

	332-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yong Xiu Gou (Valley with Beautiful Clouds), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: in partial shade in understory well above the stream bed.
	400-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Nang Gou (Big South Valley), Xiao Long Meng Forest Preserve, Dongling Shan, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: rich moist organic soils near stream in cool moist valley.
	336-2000	Plant from The Morton Arboretum Research Program. Wild collected by at Kaimanovka village, Rossiya (Russia) Republic, Russia. Habitat: mixed coniferous-deciduous forest.

Ribes maximowiczianum Kom. GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 5. MAXIMOWICZ CURRANT

	297-97	Seed from North America-China Plant Exploration Consortium (NACPEC) 1997 Jilin China Expedition. Wild collected, Changbai County, Jilin Province, China (Zhonghua). Habitat: along rocky stream bed.

Ribes missouriense Nutt. GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 5. MISSOURI GOOSEBERRY

	740-79	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn from Rock Cut State Park, Winnebago County, Illinois.
	148-80	Cutting from The Morton Arboretum. Wild collected in the east woods of the Morton Arboretum, Lisle, Du Page County, Illinois.
	520-82	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn in Silver Springs State Park, Kendall County, Illinois. Habitat: Degraded sugar maple woods.
	397-2000	Plant from Possibility Place Nursery, Inc. Garden collected.
	369-2002	Plant from Possibility Place Nursery, Inc. Garden collected.

Ribes nigrum L. GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 5. EURASIAN BLACK CURRANT

	201-93	Seed from 1993 Expedition to Russia (Gorno-Altai) Chicago BG, Holden Arb, Minn. Landsc. Arb, Mo. BG, & Morton Arb. Wild collected by Peter J. van der Linden, The Morton Arboretum on bank of Tuguruk River upstream of the highway bridge about 20 km. from Ust-Koksa (west of), Gorno-Altayskaya Autonomous Region, Russia. Habitat: peaty soil,spruce-birch boreal forest,n-facing slope base.

Ribes odoratum H.L.Wendl. GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 5. CLOVE CURRANT

	1050-35	Plant from Cole Nursery Co. Garden collected.
	482-72	Cutting from The Morton Arboretum. Garden collected.
	827-80	Cutting from The Morton Arboretum. Garden collected.
	509-85	Seed from Rivendell Botanic Garden. Wild collected, Rawlins County, Kansas.

Ribes rubrum L. GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 4. RED CURRANT

	618-79	Seed from Jardin Botanique de la Ville. Wild collected at Ste. Foy, Cote-d'Or Department, France.

Ribes tenue Jancz. GROSSULARIACEAE - GOOSEBERRY FAMILY
	USDA 6. HIMALAYAN CURRANT

	940-53	Cutting from The Morton Arboretum. Garden collected.
	288-82	Cutting from The Morton Arboretum. Garden collected.
	273-85	Cutting from The Morton Arboretum. Garden collected.

Robinia hispida L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 5. BRISTLY LOCUST, ROSE ACACIA

	294-86	Plant from Stan Tyson, Horticultural Propagation Ltd. Wild collected, Cass County, Illinois.

Rosa acicularis Lindl. ROSACEAE - ROSE FAMILY
	USDA 5. PRICKLY ROSE

	772-79	Seed from Central Siberian Botanical Garden of the Siberian Branch of the U.S.S.R. Academy of Sciences. Wild collected Altai Mts., U.S.S.R.
	216-93	Seed from 1993 Expedition to Russia (Gorno-Altai) Chicago BG, Holden Arb, Minn. Landsc. Arb, Mo. BG, & Morton Arb. Wild collected by Peter J. van der Linden, The Morton Arboretum along a road near the base of a slope above the Sema River 10 km. south of Cherga, Gorno-Altayskaya Autonomous Region, Russia. Habitat: in meadow and pasture.
	247-2002	Division from The Morton Arboretum. From plant of known wild origin collected, Cook County, Minnesota.

Rosa 'Adelaide Hoodless' Patent 1973 ROSACEAE - ROSE FAMILY
	USDA 2. ADELAIDE HOODLESS ROSE

	118-2002	Plant from High Country Gardens. Garden collected.

Rosa 'A. MacKenzie' ROSACEAE - ROSE FAMILY
	USDA 2B. A. MACKENZIE ROSE, ALEXANDER MACKENZIE ROSE

	1025-2005	Plant from Bailey Nurseries, Inc. Garden collected.

Rosa arkansana Porter ROSACEAE - ROSE FAMILY
	USDA 5. ARKANSAS ROSE, WILD ROSE

	371-78	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected Sandy edges of Poudre River, 10 mi. NW of Fort Collins, Larimer County, Colorado.

Rosa arvensis Huds. ROSACEAE - ROSE FAMILY
	USDA 6. FIELD ROSE

	105-91	Seed from Jardin Botanique de l'Universite Louis Pasteur de Strasbourg. Wild collected near Koenigsbruck, Bas-Rhin Department, Alsace Region, France.

Rosa beggeriana Schrenk ROSACEAE - ROSE FAMILY
	USDA 4. BEGGER ROSE

	677-79	Plant from Cary Arboretum of the New York Botanical Garden. Garden collected.
	77-95	Division from The Morton Arboretum. From plant of known wild origin collected in Central Asia, U.S.S.R.

Rosa bella Rehder & E.H.Wilson ROSACEAE - ROSE FAMILY
	USDA 6. SOLITARY ROSE

	385-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Mu Chang (Big Trunk Field), Baihua Shan Forest Preserve, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: on a slope in woodland understory.

Rosa canina L. ROSACEAE - ROSE FAMILY
	USDA 4. DOG ROSE

	170-88	Seed from Ogrod Botaniczny Uniwersytetu Wroclawskiego (University of Wroclaw Botanical Garden). Wild collected Strzyzow, Rzeszow Province, Poland.
	114-93	Seed from Hortus Botanicus Universitatis Mariae Curie-Sklodowska. Wild collected at Tarnogora k. Izbicy i okolice, Lublin Province, Poland.

Rosa carolina L. ROSACEAE - ROSE FAMILY
	USDA 5. PASTURE ROSE

	547-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn, Iroquois County, Illinois. Habitat: sandy savannah.
	8-84	Seed from Rivendell Botanic Garden. Wild collected, Brown County, Illinois.
	715-2004	Plant from Midwest Groundcovers. Garden collected.

Rosa corymbifera Borkh. ROSACEAE - ROSE FAMILY
	USDA 6. CORYMB ROSE

	38-76	Cutting from Hidden Lake Gardens, Michigan State University, Department of Horticulture. Garden collected.
	764-79	Seed from Main Botanical Garden of Kazakh Academy of Sciences. Wild collected in the Karatau Mountain Range, Chimkent Region, Kazakh S.S.R., U.S.S.R. Habitat: mountains.

Rosa 'David Thompson' ROSACEAE - ROSE FAMILY
	USDA 2. DAVID THOMPSON ROSE

	121-92	Plant from Evergreen Nursery Co., Inc. Garden collected.

Rosa giraldii Crep. ROSACEAE - ROSE FAMILY
	USDA 5. GIRALDI'S ROSE, CHINESE MOUNTAIN ROSE

	109-96	Seed from Shanghai Botanic Garden. Wild collected on Mt. Mai ji, Gansu Province, China (Zhonghua). Habitat: in shrubbery in mountainy area.

Rosa 'Hansa' ROSACEAE - ROSE FAMILY
	USDA 3. HANSA ROSE, HANSA RUGOSA ROSE

	1230-2004	Plant from Garden Prairie Nursery. Garden collected.
	116-2007	Plant from The Morton Arboretum Plant Sale. Garden collected.

Rosa helenae Rehder & E.H.Wilson ROSACEAE - ROSE FAMILY
	USDA 6. HELEN ROSE

	128-83	Plant from United States National Arboretum. Wild collected near Muyuping Forest Brigade, near km 73 from Xingshan Xiam, Hubei Province, China (Zhonghua). Habitat: southeast side of watershed divide between Yangtse & Hia Jing Rivers.
	157-93	Cutting from The Morton Arboretum. Garden collected nr Muyuping Forest Brigade, nr km 73 from Xingshan Xiam, Western Hubei Province, China (Zhonghua). Habitat: SE side of watershed divide bet. Yangtse & Hia Jing rivers.

Rosa henryi Boulenger ROSACEAE - ROSE FAMILY
	USDA 6. HENRY'S ROSE

	584-2000	Seed from Morris Arboretum of the University of Pennsylvania. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1995 Shaanxi China Expedition on Beiba Forest Station, enroute to remote station, Hanzhong District, Shaanxi Province, China (Zhonghua). Habitat: full sun on well-drained soils between large boulders.

Rosa inodora Fr. ROSACEAE - ROSE FAMILY
	USDA 5. SCENTLESS ROSE

	162-89	Seed from Jardin Botanique de l'Universite Louis Pasteur de Strasbourg. Wild collected near Dorlisheim, Bas-Rhin Department, Alsace Region, France.

Rosa koreana Komar. ROSACEAE - ROSE FAMILY
	USDA 6. KOREAN ROSE

	400-97	Seed from Midwest Plant Collecting Collaborative (MWPCC) 1997 Russia Far East Expedition. Wild collected, Rossiya (Russia) Republic, Russia. Habitat: on 45 degree n-facing slope with woody overstory & herbaceous understory, lg. pieces of volcanic? rock at top.

Rosa marginata Wallr. ROSACEAE - ROSE FAMILY
	USDA 5. MARGINED ROSE

	141-91	Seed from Instytut Hodowli I Aklimatyzacji Roslin Ogrod Botaniczyn. Wild collected near Gora, Suwalki Province, Poland.

Rosa micrantha Borrer ex Sm. ROSACEAE - ROSE FAMILY
	USDA 6. SMALL-LEAVED ROSE

	116-90	Seed from Jardin Botanique de l'Universite de Liege. Wild collected near Modave, Liege Province, Belgium.

Rosa mollis Sm. ROSACEAE - ROSE FAMILY
	USDA 6. ROSE

	408-78	Seed from National Botanic Gardens, Glasnevin. Wild collected by D. Synnott Cortial Lough, Louth, Ireland.
	591-80	Seed from Botanical Garden, University of Helsinki. Wild collected Atwenanmaa, Kumlinge, Skalberg, Finland.
	32-99	Seed from Agder Natural History Museum and Botanical Garden. Wild collected at Fanefjell, Bygland District, Aust-Agder County, Norway. Habitat: outskirts of rich forest.
	267-2001	Seed from Agder Natural History Museum and Botanical Garden. Wild collected at Asen, Iveland District, Aust-Agder County, Norway.

Rosa nutkana Pall. ROSACEAE - ROSE FAMILY
	USDA 6. NOOTKA ROSE

	398-81	Cutting from The Morton Arboretum. Garden collected.
	115-96	Seed from The Botanical Garden, University of British Columbia. Wild collected at McLure, British Columbia Province, Canada.

Rosa palustris Marshall ROSACEAE - ROSE FAMILY
	USDA 5. SWAMP ROSE

	566-81	Seed from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg 2 1/2 mi. northwest of Bath, Mason County, Illinois.
	197-82	Seed from Staff, The Morton Arboretum. Wild collected by Ross C. Clark top of Toxway Falls along US 64, Transylvania County, North Carolina. Habitat: crevice in a gently sloping, exposed, gneiss outcrop.
	88-99	Seed from United States National Arboretum. Wild collected in Blackwater National Wildlife Refuge, Dorchester County, Maryland.
	793-2004	Plant from Possibility Place Nursery, Inc. Garden collected.
	1437-2004	Plant from David Listerman & Associates. Garden collected.

Rosa pendulina L. ROSACEAE - ROSE FAMILY
	USDA 6. ALPINE ROSE

	581-80	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected, Vaud Canton, Switzerland.
	641-80	Seed from Jardin Botanique de l'Universite Louis Pasteur de Strasbourg. Wild collected, France.
	104-81	Seed from Botanic Garden of Natural Science Faculty of Komensky University. Wild collected Dedinky, Slovensky Raj, Czechoslovakia.

Rosa pimpinellifolia L. ROSACEAE - ROSE FAMILY
	USDA 5. SCOTS ROSE, BURNET ROSE, SCOTCH ROSE

	289-86	Sucker from The Morton Arboretum. Garden collected.
	244-2002	Division from The Morton Arboretum. From plant of known wild origin collected by Peter J. van der Linden above the Koksa River along the road from Ust-Kan to Ust- Koksa, about 10 km. before (west of) Ust-Koksa, Gorno-Altayskaya Autonomous Region, Russia. Habitat: in meadow on s-facing slope.
	245-2002	Division from The Morton Arboretum. From plant of known wild origin collected by Peter J. van der Linden above the Koksa River along the road from Ust-Kan to Ust- Koksa, about 10 km. before (west of) Ust-Koksa, Gorno-Altayskaya Autonomous Region, Russia. Habitat: in meadow on s-facing slope.

Rosa pisocarpa Gray ROSACEAE - ROSE FAMILY
	USDA 6. CLUSTER ROSE

	291-97	Division from The Morton Arboretum. From plant of known wild origin collected near Juanita, King County, Washington.

Rosa 'Polareis' ROSACEAE - ROSE FAMILY
	USDA 4. POLAREIS ROSE

	167-2002	Plant from Hortico. Garden collected.

Rosa rugosa Thunb. ROSACEAE - ROSE FAMILY
	USDA 2. RUGOSA ROSE

	340-78	Seed from Botanical Garden of the Latvian Academy of Sciences. Wild collected Sachalin, Utesnoje, U.S.S.R.
	643-79	Cutting from The Morton Arboretum. From plant of known wild origin collected by John L. Creech, Japan.
	177-85	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected Wakkanai-shi, Hokkaido, Japan. Habitat: high beach near sea Maximum temp. -19 deg. c.
	243-93	Seed from Matthaei Botanical Gardens, The University of Michigan. Wild collected by David Michener, Matthaei Botanical Gardens, The University of Michigan on Furugelmas Island, (in Pacific Ocean near the North Korean border, Rossiya (Russia) Republic, Russia.
	422-94	Cutting from The Morton Arboretum. From plant of known wild origin collected by John L. Creech, Hokkaido Prefecture, Hokkaido Region, Japan. Habitat: ocean front.

Rosa rugosa 'Marie Bugnet' ROSACEAE - ROSE FAMILY
	USDA 4. MARIE BUGNET RUGOSA ROSE

	132-88	Plant from Roses of Yesterday & Today. Garden collected.

Rosa setigera Michx. ROSACEAE - ROSE FAMILY
	USDA 5. PRAIRIE ROSE, CLIMBING ROSE, ILLINOIS ROSE, SUNSHINE ROSE

	296-99	Seed from Toronto Zoo. Wild collected by unknown on Pelee Island, Essex County, Ontario Province, Canada. Habitat: roadside thicket.
	307-2000	Plant from Out Back Nursery. Garden collected.
	16-2001	Seed from The Holden Arboretum. Wild collected by unknown on Kelleys Island, Trailer Lane section, Erie County, Ohio.
	370-2002	Plant from Possibility Place Nursery, Inc. Garden collected.
	792-2004	Plant from Possibility Place Nursery, Inc. Garden collected.

Rosa setipoda Hemsl. & E.H.Wilson ROSACEAE - ROSE FAMILY
	USDA 6. NODFRUIT ROSE

	557-2001	Plant from Morris Arboretum of the University of Pennsylvania. From plant of known wild origin collected by North America-China Plant Exploration Consortium (NACPEC) 1996 Shaanxi & Gansu Province China Expedition at Nanzheng Forest Bureau, Liping Forest Station, Da Leng Ba, Hanzhong District, Shaanxi Province, China (Zhonghua). Habitat: clear-cut area on 40% e-facing slope.

Rosa suffulta Greene ROSACEAE - ROSE FAMILY
	USDA 5. PRAIRIE ROSE, SUNSHINE ROSE

	687-80	Seed from Morden Research Station, Research Branch, Canada Agriculture. Wild collected, Manitoba Province, Canada.
	448-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn 2.6 miles east of Seneca along NE-2 in the Sand Hills area, Thomas County, Nebraska. Habitat: Sandy, south facing road cut.

Rosa sweginzowii Koehne ROSACEAE - ROSE FAMILY
	USDA 6. SWEGINZOW'S ROSE

	40-93	Seed from Shanghai Botanic Garden. Wild collected on Mt. Emei and in Jiuzhaigou area, Sichuan Province, China (Zhonghua). Habitat: in mixed forest in a valley.

Rosa tomentosa Sm. ROSACEAE - ROSE FAMILY
	USDA 6. TOMENTOSE ROSE

	320-81	Seed from Gradina Botanica a Universitatii din Bucuresti. Wild collected region of Sinyeorz-Bai (dist. Bistrita Nasand), Romania.

Rosa villosa L. ROSACEAE - ROSE FAMILY
	USDA 6. APPLE ROSE

	582-80	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected, Valais Canton, Switzerland.
	148-81	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected above Khoper River southwest of Povorino in the Novokhopersk district, Russian S.F.S.R., U.S.S.R. Habitat: sandy hills.
	252-81	Seed from Botanischer Garten und Botanisches Museum Berlin-Dahlem. Wild collected, Artvin Province, Black Sea Region, Turkey.
	382-84	Seed from Arboretum Novy Dvur u Opavy Slezske Muzeum. Wild collected Montenegro, Montes Lovcen, Bukovica, Yugoslavia.

Rosa virginiana Mill. ROSACEAE - ROSE FAMILY
	USDA 4. VIRGINIA ROSE

	141-97	Plant from Midwest Groundcovers. Garden collected.
	260-99	Plant from Midwest Groundcovers. Garden collected.
	272-2000	Plant from The Growing Place. Garden collected.
	289-2005	Plant from The Morton Arboretum Plant Sale. Garden collected.
	583-2006	Plant from Midwest Groundcovers. Garden collected.

Rosa wichuraiana Crep. ROSACEAE - ROSE FAMILY
	USDA 6. MEMORIAL ROSE

	281-85	Cutting from The Morton Arboretum. Garden collected.

Rosa 'William Baffin' ROSACEAE - ROSE FAMILY
	USDA 2A. WILLIAM BAFFIN ROSE

	134-95	Plant from Hardy Roses for the North. Garden collected.

Rosa woodsii Lindl. ROSACEAE - ROSE FAMILY
	USDA 4. WOOD'S ROSE

	688-80	Seed from Morden Research Station, Research Branch, Canada Agriculture. Wild collected.
	477-81	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn Cache Nat'l Forest,ll.2 Mi W of the east boundary, Bear Lake County, Idaho. Habitat: small creek along ID 36.
	246-2002	Division from The Morton Arboretum. From plant of known wild origin collected, Alberta Province, Canada.

Rubus allegheniensis Porter ROSACEAE - ROSE FAMILY
	USDA 4. WILD BLACKBERRY

	717-79	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn Iroquois Co. Cons. Area, 0.2 mi. SW of Pkg. 2, Iroquois County, Illinois. Habitat: sandy savannah.

Rubus crataegifolius Bunge ROSACEAE - ROSE FAMILY
	USDA 5. HAWTHORN RASPBERRY

	346-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: moist valleys only; woodland understory.
	28-96	Seed from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: moist valleys only; woodland understory.

Rubus occidentalis L. ROSACEAE - ROSE FAMILY
	USDA 4. BLACK RASPBERRY

	298-85	Plant from Staff, The Morton Arboretum. Wild collected by Raymond F. Schulenberg west bank of Du Page River, Illinois. Habitat: Previously farmed floodplain.
	311-2000	Plant from Out Back Nursery. Garden collected.

Rubus parviflorus Nutt. ROSACEAE - ROSE FAMILY
	USDA 4. THIMBLEBERRY

	209-96	Division from The Morton Arboretum. Garden collected.

Rubus ulmifolius Schott ROSACEAE - ROSE FAMILY
	USDA 6. ELM-LEAVED RASPBERRY

	190-84	Seed from Jardin Botanique de la Ville et de l`Univeriste de Caen. Wild collected Montes d'Eraines, Normande Region, Calvados Department, France. Habitat: pelouses xerophiles calcaires.

Rudbeckia fulgida var. fulgida Aiton (HERBACEOUS) ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 4. ORANGE BLACK-EYED SUSAN, ORANGE CONEFLOWER

	10-2005	Plant from various commercial sources. Garden collected.
	1032-2005	Plant from various commercial sources. Garden collected.
	528-2009	Plant from various commercial sources. Garden collected.

Salix acutifolia Willd. SALICACEAE - WILLOW FAMILY
	USDA 5. SHARP-LEAVED WILLOW

	534-54	Cutting from The Morton Arboretum. Garden collected.

Salix aegyptiaca L. SALICACEAE - WILLOW FAMILY
	USDA 6. ARMENIAN WILLOW

	171-45	Cutting from The Morton Arboretum. Garden collected.
	244-89	Cutting from The Morton Arboretum. Garden collected.

Salix alba L. SALICACEAE - WILLOW FAMILY
	USDA 2. WHITE WILLOW

	162-82	Cutting from The Morton Arboretum. Garden collected.
	452-96	Cutting from The Morton Arboretum. Garden collected.

Salix alba 'Tristis' SALICACEAE - WILLOW FAMILY
	USDA 3. GOLDEN WEEPING WILLOW

	128-44	Cutting from The Morton Arboretum. Garden collected.
	716-58	Cutting from The Morton Arboretum. Garden collected.
	196-91	Cutting from The Morton Arboretum. Garden collected.
	58-95	Cutting from The Morton Arboretum. Garden collected.
	552-2005	Plant from Schichtel's Nursery. Garden collected.

Salix amygdaloides Andersson SALICACEAE - WILLOW FAMILY
	USDA 5. PEACH-LEAVED WILLOW

	604-63	Cutting from The Morton Arboretum. Wild collected on the shore of Arbor Lake, Morton Arboretum, Lisle, Du Page County, Illinois. Habitat: lake shore.
	255-89	Cutting from Staff, The Morton Arboretum. Wild collected by Peter J. van der Linden from the north shore of Marble Lake, Dickinson County, Iowa. Habitat: lakeshore.
	38-94	Cutting from Rivendell Botanic Garden. Wild collected by Stan Tyson, Horticultural Propagation Ltd. at edge of Beardstown Swamp at junction of IL-125 and Boulevard Road, Cass County, Illinois. Habitat: marsh.

Salix x blanda Andersson SALICACEAE - WILLOW FAMILY
	USDA 4. WISCONSIN WEEPING WILLOW

	514-75	Plant from Burr Oak Nursery. Garden collected.
	190-97	Cutting from The Morton Arboretum. Garden collected.

Salix caprea L. SALICACEAE - WILLOW FAMILY
	USDA 5. GOAT WILLOW, PUSSY WILLOW

	525-84	Cutting from The Morton Arboretum. Garden collected.
	60-93	Cutting from The Morton Arboretum. Garden collected.

Salix cinerea L. SALICACEAE - WILLOW FAMILY
	USDA 2. GRAY WILLOW, PUSSY WILLOW

	526-84	Cutting from The Morton Arboretum. Garden collected.
	453-96	Cutting from The Morton Arboretum. Garden collected.

Salix discolor Muhl. SALICACEAE - WILLOW FAMILY
	USDA 2. PUSSY WILLOW

	381-83	Cutting from Staff, The Morton Arboretum. Wild collected from north of Lake Defiance in Moraine Hills State Park, Mc Henry County, Illinois.

Salix elaeagnos Scop. SALICACEAE - WILLOW FAMILY
	USDA 4. ROSEMARY WILLOW

	34-78	Cutting from The Morton Arboretum. Garden collected.
	527-84	Cutting from The Morton Arboretum. Garden collected.

Salix fragilis L. SALICACEAE - WILLOW FAMILY
	USDA 5. CRACK WILLOW

	82-64	Cutting from Staff, The Morton Arboretum. Wild collected by Roy M. Nordine & Floyd Swink 3 miles west of Batavia at the Batavia Peat Moss Co., Kane County, Illinois. Habitat: bog.
	378-83	Cutting from Staff, The Morton Arboretum. Wild collected by Ray Schulenberg & Ed Hedborn west of Lake Defiance in Moraine Hills State Park, Mc Henry County, Illinois. Habitat: old wet field.
	18-2003	Cutting from The Morton Arboretum. Garden collected.

Salix glaucophylloides var. glaucophylla (Bebb) C.K.Schneid. SALICACEAE - WILLOW FAMILY
	USDA 4. BLUE-LEAVED WILLOW

	528-84	Cutting from The Morton Arboretum. From plant of known wild origin collected at Zanders Woods in Thornton, Cook County, Illinois.
	197-91	Cutting from The Morton Arboretum. Garden collected by Staff at Zanders Woods in Thornton, Cook County, Illinois.

Salix humilis Marshall SALICACEAE - WILLOW FAMILY
	USDA 4. PRAIRIE WILLOW

	472-78	Cutting from The Morton Arboretum. From plant of known wild origin collected by Floyd A. Swink at Garden Plain, Illinois.
	548-83	Cutting from The Morton Arboretum. From plant of known wild origin collected by Floyd A. Swink at Garden Plain, Illinois.
	310-2000	Plant from Out Back Nursery. Garden collected.
	1435-2004	Plant from David Listerman & Associates. Garden collected.

Salix interior (Rowlee) Muhl. SALICACEAE - WILLOW FAMILY
	USDA 2. SANDBAR WILLOW

	143-91	Cutting from Staff, The Morton Arboretum. Wild collected by Peter J. van der Linden at edge of Momence Wetlands State Preserve, Kankakee County, Illinois. Habitat: disturbed, open, sandy soil.
	279-97	Cutting from The Morton Arboretum. From plant of known wild origin collected on the west side of Lake Defiance in Moraine Hills State Park, Mc Henry County, Illinois.

Salix irrorata Andersson SALICACEAE - WILLOW FAMILY
	USDA 5. BLUE-STEMMED WILLOW

	164-82	Cutting from The Morton Arboretum. Garden collected.
	530-84	Cutting from The Morton Arboretum. Garden collected.
	7-90	Cutting from The Morton Arboretum. Garden collected.

Salix jessoensis Seemen SALICACEAE - WILLOW FAMILY
	USDA 6. YEDDO WILLOW

	165-82	Cutting from The Morton Arboretum. Garden collected.
	4-94	Cutting from The Morton Arboretum. Garden collected.

Salix lucida Muhl. SALICACEAE - WILLOW FAMILY
	USDA 2. SHINING WILLOW

	834-79	Cutting from The Morton Arboretum. Garden collected by Floyd A. Swink near Exeland, Sawyer County, Wisconsin.
	65-93	Cutting from The Morton Arboretum. Garden collected by Floyd A. Swink near Exeland, Sawyer County, Wisconsin.

Salix matsudana Koidz. SALICACEAE - WILLOW FAMILY
	USDA 5. HANKOW WILLOW

	366-79	Cutting from The Morton Arboretum. Garden collected.
	245-89	Cutting from The Morton Arboretum. Garden collected.

Salix nigra Marshall SALICACEAE - WILLOW FAMILY
	USDA 4. BLACK WILLOW

	62-61	Cutting from The Morton Arboretum. Wild collected from the east edge of Bur Reed Marsh on the Morton Arboretum, Lisle, Du Page County, Illinois.
	180-88	Plant from Rivendell Botanic Garden. Wild collected site not noted, Illinois.
	162-93	Cutting from The Morton Arboretum. From plant of known wild origin collected site not noted, Illinois.
	278-97	Cutting from The Morton Arboretum. From plant of known wild origin collected from the east edge of Bur Reed Marsh on the Morton Arboretum, Lisle, Du Page County, Illinois.

Salix pentandra 'Silver Lake' SALICACEAE - WILLOW FAMILY
	USDA 3. PRAIRIE REFLECTIONÔ

	121-2006	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Garden collected.

Salix phylicifolia L. SALICACEAE - WILLOW FAMILY
	USDA 4. TEA-LEAVED WILLOW

	40-98	Seed from Department of Horticulture, Section Urban Horticulture Agricultural University of Norway (post-1986). Wild collected, Oppland County, Norway.
	211-2003	Cutting from The Morton Arboretum. From plant of known wild origin collected, Oppland County, Norway.

Salix purpurea L. SALICACEAE - WILLOW FAMILY
	USDA 5. PURPLE BASKET WILLOW

	18-75	Cutting from Willowwood Arboretum. Garden collected.
	536-84	Cutting from The Morton Arboretum. Garden collected.

Salix rigida Muhl. SALICACEAE - WILLOW FAMILY
	USDA 4. RIGID WILLOW

	372-83	Cutting from Staff, The Morton Arboretum. Wild collected along Willow Creek in Rock Cut State Park, Winnebago County, Illinois. Habitat: gravel bar.

Salix x sepulcralis Simonk. SALICACEAE - WILLOW FAMILY
	USDA 5. WEEPING WILLOW

	539-84	Cutting from The Morton Arboretum. Garden collected.

Salix sericea Marshall SALICACEAE - WILLOW FAMILY
	USDA 4. SILKY WILLOW

	372-79	Cutting from The Morton Arboretum. Garden collected.
	70-93	Cutting from The Morton Arboretum. Garden collected by Floyd A. Swink from Great Smokey Mountains National Park.
	477-2000	Cutting from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected, Haywood County, North Carolina.

Sambucus nigra L. ADOXACEAE - ELDERBERRY FAMILY
	USDA 6. EUROPEAN ELDERBERRY

	154-78	Seed from Jardin Botanique de la Ville Service des Plantations. Wild collected near Nantes, Loire Atlantique Department, France.

Sambucus sieboldiana (Miq.) Graebn. ADOXACEAE - ELDERBERRY FAMILY
	USDA 6. JAPANESE ELDERBERRY

	167-92	Cutting from The Morton Arboretum. Garden collected near Juzhnosachalinsk on Sachalin, Russian S.F.S.R., U.S.S.R.

Sanguisorba obtusa Maxim. (HERBACEOUS) ROSACEAE - ROSE FAMILY
	USDA 5. JAPANESE BURNET

	274-99	Plant from various commercial sources. Garden collected.

Sapindus drummondii Hook. & Arn. SAPINDACEAE - SOAPBERRY FAMILY
	USDA 6. SOAPBERRY

	101-83	Seed from The Morton Arboretum Research Program. Wild collected, Gillespie County, Texas.
	122-84	Seed from The Morton Arboretum Research Program. Wild collected, Cleveland County, Oklahoma.

Sasa palmata (Burb.) E.G.Camus POACEAE (GRAMINEAE) - GRASS FAMILY
	USDA 7. BAMBOO

	286-55	Plant from Dahlictown Nursery. Garden collected.
	205-92	Division from The Morton Arboretum. Garden collected.

Satureja montana L. LAMIACEAE (LABIATAE) - MINT FAMILY
	USDA 6. WINTER SAVORY, SAVORY

	206-83	Seed from Botanical Gardens and Arboretum, Brno University of Agriculture. Garden collected.
	407-85	Seed from Zemaljski Muzej SR BiH Botanicki Vrt (Botanical Garden of Sarajevo). Wild collected Grabovicka, Bosnia and Hercegovina Republic, Yugoslavia.
	145-2003	Cutting from The Morton Arboretum. From plant of known wild origin collected Grabovicka, Bosnia and Hercegovina Republic, Yugoslavia.
	468-2006	Cutting from The Morton Arboretum. From plant of known wild origin collected Grabovicka, Bosnia and Hercegovina Republic, Yugoslavia.

Schisandra chinensis (Turcz.) Baill. ILLICIACEAE - ANISE TREE FAMILY
	USDA 5. CHINESE MAGNOLIA VINE

	309-81	Seed from Chinese Academy of Forestry, Research Institute of Forestry. Wild collected, Heilongjiang Sheng Province, China (Zhonghua). Habitat: temperate cold region.
	394-82	Cutting from The Morton Arboretum. From plant of known wild origin collected at Ko Chun on Mt. Tok-yu, Republic of Korea.
	159-84	Seed from Tallinn Botanical Garden of the Estonian Academy of Sciences. Wild collected Ussuri region, Russian S.F.S.R., U.S.S.R.
	329-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yong Xiu Gou (Valley with Beautiful Clouds), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: above stream bed.

Schisandra glabra (Brickell) Rehder ILLICIACEAE - ANISE TREE FAMILY
	USDA 7. BAY STAR VINE, BAY STARVINE, WILD SARSAPARILLA

	236-81	Plant from Staff, The Morton Arboretum. Wild collected by Ross C. Clark along Panther Creek, west of Yonahdam, Stephens County, Georgia. Habitat: circumneutral,well-drained,moist soil,shade,n-facing cove.
	255-90	Cutting from The Morton Arboretum. Garden collected by Ross C. Clark along Panther Creek west of Yonah dam, Stephens County, Georgia. Habitat: in shady, n-facing cove, circumneutral, well-drained soil.
	198-91	Cutting from The Morton Arboretum. Garden collected by Ross C. Clark along Panther Creek, west of Yonahdam, Stephens County, Georgia. Habitat: circumneutral,well-drained,moist soil,shade,n.-facing cove.
	146-2003	Cutting from The Morton Arboretum. From plant of known wild origin collected by Ross C. Clark along Panther Creek, west of Yonahdam, Stephens County, Georgia. Habitat: circumneutral,well-drained,moist soil,shade,n-facing cove.
	469-2006	Cutting from The Morton Arboretum. From plant of known wild origin collected by Ross C. Clark along Panther Creek, west of Yonahdam, Stephens County, Georgia. Habitat: circumneutral,well-drained,moist soil,shade,n-facing cove.

Schisandra glabra 'Crowley's Ridge' ILLICIACEAE - ANISE TREE FAMILY
	USDA 7. CROWLEY'S RIDGE BAY STAR VINE, CROWLEY'S RIDGE CLIMBING MAGNOLIA VINE

	1121-2004	Plant from Ridgecrest Nursery and Gardens. Garden collected, Cross County, Arkansas.

Schisandra sphenanthera Rehder & E.H.Wilson ILLICIACEAE - ANISE TREE FAMILY
	USDA 7. ORANGE MAGNOLIA VINE

	110-96	Seed from Shanghai Botanic Garden. Wild collected on Mt. Mai ji, Gansu Province, China (Zhonghua). Habitat: in broad-leaved forest & water lines in mountainy area.

Sciadopitys verticillata (Thunb.) Siebold & Zucc. SCIADOPITYACEAE - UMBRELLA-PINE FAMILY
	USDA 6. JAPANESE UMBRELLA-PINE

	189-85	Plant from Iseli Nursery Inc. Garden collected.

Sedum acre L. (HERBACEOUS) CRASSULACEAE - ORPINE FAMILY
	USDA 5. MOSSY STONECROP, GOLDMOSS STONECROP, WALL-GRASS, WALL-PEPPER

	80-2007	Plant from various commercial sources. Garden collected.

Sedum iwarenge (Makino) Makino (HERBACEOUS) CRASSULACEAE - ORPINE FAMILY
	USDA 6. DUNCE CAPS

	280-2001	Plant from various commercial sources. Garden collected.

Sibiraea laevigata (L.) Maxim. ROSACEAE - ROSE FAMILY
	USDA 5. ALTAI-SPIREA

	247-83	Seed from Altai Botanical Garden. Wild collected Altai Mountains, U.S.S.R. Habitat: mountains.

Solidago flexicaulis 'Variegata' (HERBACEOUS) ASTERACEAE (COMPOSITAE) - COMPOSITE FAMILY
	USDA 4. VARIEGATED BROAD-LEAVED GOLDENROD, VARIEGATED ZIGZAG GOLDENROD

	313-2004	Plant from various commercial sources. Garden collected.

Sophora affinis Torr. & Gray FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 8. TEXAS SOPHORA

	13-86	Seed from The Morton Arboretum Research Program. Wild collected, Caddo County, Louisiana.

Sophora davidii (Franch.) Skeels FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 5. FATHER DAVID'S SOPHORA

	585-2000	Seed from Morris Arboretum of the University of Pennsylvania. Wild collected by North America-China Plant Exploration Consortium (NACPEC) 1996 Shaanxi & Gansu Province China Expedition at Xiao Long Shan Forest Bureau, Dang Chuan Forest Station, Xian Ren Yan, Tian Shui City District, Gansu Province, China (Zhonghua). Habitat: open sun, sandy-loam, well-drained over sand stone, 35% s slope.

Sophora japonica L. FABACEAE (LEGUMINOSAE) - PEA FAMILY
	USDA 5. SCHOLAR TREE, PAGODA TREE, CHINSE SCHOLAR TREE, JAPANESE PAGODA TREE

	373-36	Plant from H. Kohankie & Son. Garden collected.
	246-49	Plant from Mount Arbor Nurseries. Garden collected.
	137-50	Seed from Charles McK Lewis. Garden collected.
	180-76	Plant from United States National Arboretum. Garden collected.

Sorbaria arborea C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 6. TREE SORBARIA

	223-82	Layer from The Morton Arboretum. Garden collected.
	274-2002	Seed from U.S. National Arboretum Woody Landscape Plant Germplasm Repository. Wild collected by Tiecheng Cui, Xian Botanical Garden on East River, Taibaishan, Meixian County, Shaanxi Province, China (Zhonghua). Habitat: on 45 deg. n-facing slope.

Sorbaria sorbifolia (L.) A.Braun ROSACEAE - ROSE FAMILY
	USDA 2. FALSE-SPIREA

	316-82	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Wild collected near Vladivostok, Russian S.F.S.R., U.S.S.R.
	119-83	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Wild collected Raeonash, Russian S.F.S.R., U.S.S.R.
	266-90	Seed from Staff, The Morton Arboretum. Wild collected in the Feng lin Preserve in the Wu ying division of the town of Yichun along the Tang Wang River, Heilongjiang Sheng Province, China (Zhonghua). Habitat: along disturbed roadside.
	107-94	Plant from Western DuPage Landscaping. Garden collected.

Sorbus alnifolia (Siebold & Zucc.) K.Koch ROSACEAE - ROSE FAMILY
	USDA 6. KOREAN MOUNTAIN-ASH

	398-55	Seed from Kyoto Botanical Garden. Garden collected.
	310-81	Seed from Chinese Academy of Forestry, Research Institute of Forestry. Wild collected, Shandong Province, China (Zhonghua). Habitat: temperate regions of N & NW sections.
	427-83	Seed from Botanical Garden of the Latvian State University. Wild collected Peszczanij promontory near Vladivostok, Russian S.F.S.R., U.S.S.R. Habitat: in declivibus lapidosis collium.
	352-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: woodland edge along lake shore.
	376-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Da Xi Gou (Big West Valley), Song Shan Forest Preserve, Beijing Shi Municipality, China (Zhonghua). Habitat: s-facing very steep well-drained dry eroded granite slope.
	79-96	Plant from King Nursery. Garden collected.

Sorbus americana Marshall ROSACEAE - ROSE FAMILY
	USDA 2. AMERICAN MOUNTAIN-ASH

	55-89	Seed from Canadian Wildflower Society. Wild collected by unknown Toronto, Ontario Province, Canada.
	658-2000	Seed from Midwest Plant Collecting Collaborative (MWPCC) 2000 southeast United States Expedition. Wild collected at Blue Ridge Parkway pulloff about 1 mile from intersection of Hwy 214 and the Parkway heading toward Asheville, Haywood County, North Carolina. Habitat: 15 deg. se-facing slope in full sun.

Sorbus amurensis Koehne ROSACEAE - ROSE FAMILY
	USDA 5. AMUR MOUNTAIN-ASH

	123-83	Seed from Botanical Garden of the Far East Scientific Center of the U.S.S.R. Academy of Sciences. Wild collected near Khabarovsk, Russian S.F.S.R., U.S.S.R.

Sorbus aria (L.) Crantz ROSACEAE - ROSE FAMILY
	USDA 6. WHITEBEAM

	270-81	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected Valais, Switzerland.
	107-82	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected Ain, Switzerland.

Sorbus aucuparia L. ROSACEAE - ROSE FAMILY
	USDA 2. EUROPEAN MOUNTAIN-ASH

	213-76	Plant from Nepco Lake Nursery Division of Nedoosa-Edwards Paper Co. Garden collected.
	470-80	Seed from Institut for dendrologi og planteskoledrift Norges landbrukshogskole (pre-1986). Wild collected Telemark: Sankerad, Norway.
	656-80	Seed from Botanical Garden and Museum, University of Oslo. Wild collected by unknown Oppland, Lillehammes, Faberg, Rudsbygd, Norway.
	718-80	Seed from Museum National d'Histoire Naturelle Jarden des Plantes. Wild collected Gedre, Hautes Pyrenees Department, France. Habitat: In calcareous scrub and open woods.
	349-81	Seed from Tallinn Botanical Garden of the Estonian Academy of Sciences. Wild collected, Estonian S.S.R., U.S.S.R.
	108-82	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected, Valais Canton, Switzerland.
	5-95	Seed from Arboretum Simeria. Wild collected in Retezat National Park in the Transylvanian Alps, Hunedoara District, Romania.

Sorbus austriaca (Beck) Hedl. ROSACEAE - ROSE FAMILY
	USDA 6. AUSTRIAN MOUNTAIN-ASH

	153-91	Seed from Zemaljski Muzej SR BiH Botanicki Vrt (Botanical Garden of Sarajevo). Wild collected, Bosnia Region, Bosnia and Hercegovina Republic, Yugoslavia.
	14-93	Seed from Botanicka Zahrada Univerzity Komenskeho. Wild collected in Gacovska skala, Stratenska Hornatina (Slovensky Raj), Slovakia.

Sorbus chamaemespilus (L.) Crantz ROSACEAE - ROSE FAMILY
	USDA 6. DWARF WHITEBEAM

	66-99	Seed from Botanischer Garten der Universitat Zurich. Wild collected near Churfirsten, Alt St. Johann SG, Switzerland.
	402-2000	Seed from Museum National d'Histoire Naturelle Service des Cultures. Wild collected by unknown near Verchaix, Haute-Savoie Department, France. Habitat: joux-plane.

Sorbus commixta Hedl. ROSACEAE - ROSE FAMILY
	USDA 6. JAPANESE MOUNTAIN-ASH

	141-78	Plant from United States National Arboretum. Garden collected.
	28-94	Seed from Botanical Garden, University of Helsinki 1993 Hokkaido, Japan Expedition. Wild collected on Mt. Panke, 9 km northeast of Nakagawa in Nakagawa Experimental Forest of Hokkaido University, Kamikawa District, Hokkaido Prefecture, Hokkaido Region, Japan. Habitat: open mtn top of pine/mtn ash/birch/alder.
	33-99	Seed from Agder Natural History Museum and Botanical Garden. Wild collected at Daiseu, Honshu Island, Japan.
	63-2000	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Karuizawa Town west of Tokyo, Kitasaku County, Nagano-ken Prefecture, Chubu Region, Japan.

Sorbus decora (Sarg.) C.K.Schneid. ROSACEAE - ROSE FAMILY
	USDA 2. SHOWY MOUNTAIN-ASH

	548-80	Seed from Beal-Garfield Botanic Garden, Michigan State University. Wild collected, Marquette County, Michigan. Habitat: Wooded lakeshore.

Sorbus discolor (Maxim.) Hedl. ROSACEAE - ROSE FAMILY
	USDA 6.

	488-2000	Plant from The Holden Arboretum. From plant of known wild origin collected by North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition in Song Shan Forest Preserve, Tang Zhi Gou (Hot Spring Valley), Yanqing County, Beijing Shi Municipality, China (Zhonghua). Habitat: stream side, part shade and moist soil.

Sorbus domestica L. ROSACEAE - ROSE FAMILY
	USDA 6. SERVICE TREE

	10-88	Seed from Zemaljski Muzej SR BiH Botanicki Vrt (Botanical Garden of Sarajevo). Wild collected Hrvat ska; Dalmacija; Korcula Isl., Yugoslavia.

Sorbus hybrida (L.) L. ROSACEAE - ROSE FAMILY
	USDA 5. HYBRID SERVICE TREE

	280-81	Seed from Botanical Garden and Museum, University of Oslo. Wild collected Baskerud, Hole:Vik, Norway.
	150-82	Seed from Institut for dendrologi og planteskoledrift Norges landbrukshogskole (pre-1986). Wild collected Odda, Hordaland County, Norway.
	24-84	Seed from Botanical Garden and Museum, University of Oslo. Wild collected near Hole, Buskerud, Norway.

Sorbus intermedia (Ehrh.) Pers. ROSACEAE - ROSE FAMILY
	USDA 5. SWEDISH WHITEBEAM

	253-81	Seed from Botanischer Garten und Botanisches Museum Berlin-Dahlem. Wild collected West Berlin, Federal Republic of Germany.
	187-83	Seed from Botanischer Garten. Wild collected at Heyerode in Muhlhausen Urban District Heyerode, Erfurt District, German Democratic Republic.
	113-84	Seed from Swedish University of Agricultural Sciences, Department of Floriculture & Horticultural Sciences. Wild collected Ln Kippholmen Bohuslan, Sweden.

Sorbus japonica (Decne.) Hedl. ROSACEAE - ROSE FAMILY
	USDA 6. JAPANESE MOUNTAIN-ASH

	50-2003	Seed from Kyoto Botanical Garden. Wild collected by unknown Ohnuma, Hakodate-shi (city), Hokkaido Island, Hokkaido Prefecture, Hokkaido Region, Japan.

Sorbus latifolia (Lam.) Pers. ROSACEAE - ROSE FAMILY
	USDA 5. BROAD-LEAVED EUROPEAN MOUNTAIN-ASH

	261-93	Seed from Stephane Brame. Wild collected in Fontainebleau Forest, Seine et Marne Department, France. Habitat: in sandy, acid soil among big rocks.
	144-99	Seed from Botanischer Garten der Universitat Munster (Munster University Botanical Garden). Wild collected at Meerhof Wascheberg (NRW region), Germany.

Sorbus mougeotii Soy.-Will. & Godr. ROSACEAE - ROSE FAMILY
	USDA 6. MOUGEOT WHITEBEAM

	583-80	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected, Valais Canton, Switzerland.
	271-81	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected, Valais Canton, Switzerland.
	110-82	Seed from Direction des Conservatoire et Jardin Botanique de la Ville de Geneve. Wild collected, Haute-Savoie Department, France.

Sorbus pohuashanensis (Hance) Hedl. ROSACEAE - ROSE FAMILY
	USDA 6. CHINESE MOUNTAIN-ASH

	311-81	Seed from Chinese Academy of Forestry, Research Institute of Forestry. Wild collected, Shandong Province, China (Zhonghua). Habitat: temperate region of north and northwest section.
	354-93	Seed from North America-China Plant Exploration Consortium (NACPEC) 1993 Heilongjiang China Expedition. Wild collected at Jian Shan Jiao, Heilongjiang Sheng Province, China (Zhonghua). Habitat: wet upland woods (edge).
	391-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Aoyu Gou (Valley in a Valley), Baihua Shan Forest Preserve, Mentougou District, Beijing Shi Municipality, China (Zhonghua). Habitat: nr.stream in sheltered moist valley in org.soil in rocks.

Sorbus scopulina Greene ROSACEAE - ROSE FAMILY
	USDA 6. WESTERN MOUNTAIN-ASH

	52-82	Seed from Washington Park Arboretum University of Washington. Wild collected Teton Pass, Teton County, Wyoming.

Sorbus torminalis (L.) Crantz ROSACEAE - ROSE FAMILY
	USDA 6. CHECKERTREE MOUNTAIN-ASH

	522-83	Seed from Botanika Zahrada University P.J. Safarika. Wild collected Pannonicum matricum, Czechoslovakia.
	614-83	Seed from Botanischer Garten, Section Biowissenschaften, Martin-Luther-Universitat Halle-Wittenberg. Wild collected Thuringen, Kahla, German Democratic Republic.

Spiraea alpina Pall. ROSACEAE - ROSE FAMILY
	USDA 6. SPIREA

	517-84	Seed from Central Siberian Botanical Garden of the Siberian Branch of the U.S.S.R. Academy of Sciences. Wild collected, Russian S.F.S.R., U.S.S.R.

Spiraea betulifolia Pall. ROSACEAE - ROSE FAMILY
	USDA 5. BIRCHLEAF SPIREA

	165-93	Cutting from The Morton Arboretum. Garden collected.
	29-94	Seed from Botanical Garden, University of Helsinki 1993 Hokkaido, Japan Expedition. Wild collected at Mukaihassen, 12 km north-northeast of Teshio forest headquarters, Teshio Experimental Forest of Hokkaido University, Rumoi District, Hokkaido Prefecture, Hokkaido Region, Japan. Habitat: streamside in steeply sloping valley.

Spiraea blumei G.Don ROSACEAE - ROSE FAMILY
	USDA 6. BLUME'S SPIREA

	46-91	Plant from Botanic Garden of the Chicago Horticultural Society. Wild collected by unknown along Rt. 31 at Pong-hwa, Kyongsang-pukto Province, Republic of Korea. Habitat: open, e-facing, cut-over, talus slope.
	350-99	Seed from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected by unknown along Route 31, Pong-hwa gun, Kyongsang-pukto Province, Republic of Korea. Habitat: e-facing open slope with cut over talus.

Spiraea chamaedryfolia L. ROSACEAE - ROSE FAMILY
	USDA 5. GERMANDER SPIREA

	441-79	Seed from Cary Arboretum of the New York Botanical Garden. Wild collected in the Altai Mts. about 1 mile east of Artybash, Russian S.F.S.R., U.S.S.R.
	773-79	Seed from Central Siberian Botanical Garden of the Siberian Branch of the U.S.S.R. Academy of Sciences. Wild collected Altai Mts., Russian S.F.S.R., U.S.S.R.

Spiraea corymbosa Raf. ROSACEAE - ROSE FAMILY
	USDA 6.

	361-2000	Seed from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected by unknown Chadwell Gap Trail, Cumberland Gap National Historical Park, Lee County, Virginia. Habitat: 5 to 15% s-facing slope.

Spiraea crenata L. ROSACEAE - ROSE FAMILY
	USDA 6. SNOW SPIREA

	199-93	Seed from 1993 Expedition to Russia (Gorno-Altai) Chicago BG, Holden Arb, Minn. Landsc. Arb, Mo. BG, & Morton Arb. Wild collected by Peter J. van der Linden, The Morton Arboretum along the main road about 10 km. southeast of Ust-Koksa, Gorno-Altayskaya Autonomous Region, Russia. Habitat: in low meadow with scattered trees along a dry stream.

Spiraea decumbens W.Koch ROSACEAE - ROSE FAMILY
	USDA 6. PROSTRATE SPIREA

	291-95	Cutting from The Morton Arboretum. Garden collected.

Spiraea douglasii Hook. ROSACEAE - ROSE FAMILY
	USDA 5. DOUGLAS' SPIREA

	186-64	Cutting from Royal Botanic Gardens Kew. Garden collected.
	969-80	Seed from Staff, The Morton Arboretum. Wild collected by Edward Hedborn Lee Creek Campground on S. side of US l2, Lolo Nat. Forest, Missoula County, Montana.

Spiraea flexuosa Fisch. ROSACEAE - ROSE FAMILY
	USDA 5. SPIREA

	362-2000	Seed from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected by unknown at Omnodelger Sum, Henti Aimag, Mongolia. Habitat: eroded granite soils 8% s-facing slope grassland with scattered larch trees.
	121-2001	Plant from USDA-ARS, North Central Regional Plant Introduction Station Iowa State University. Wild collected by USDA-Ames 1998 Hentii & Hovsgol Mongolia Expedition at Omnodelger Sum, Henti Aimag, Mongolia. Habitat: gravelly grasslands, 8% s-facing slope, soil formed from eroded granite.

Spiraea fritschiana var. parvifolia Liou ROSACEAE - ROSE FAMILY
	USDA 6. LITTLE-LEAVED FRITSCH'S SPIREA

	322-94	Seed from North America-China Plant Exploration Consortium (NACPEC) 1994 Beijing China Expedition. Wild collected at Yong Xiu Gou (Valley with Beautiful Clouds), Wuling Shan Preserve, Miyun County, Beijing Shi Municipality, China (Zhonghua). Habitat: growing on an embankment just above a stream.

Spiraea hypericifolia L. ROSACEAE - ROSE FAMILY
	USDA 5. SPIREA

	26-82	Seed from Botanical Garden of the Uzbek Academy of Sciences. Wild collected Central Asia, U.S.S.R.
	284-85	Cutting from The Morton Arboretum. Garden collected.

Spiraea japonica L. ROSACEAE - ROSE FAMILY
	USDA 6. JAPANESE SPIREA, JAPANESE MEADOWSWEET

	179-2001	Seed from Laboratory of Floriculture and Ornamental Horticulture, Chiba University. Wild collected at Haruna Town, Gunma-gun, Gumma-ken Prefecture, Kanto Region, Japan.

Spiraea japonica var. fortunei (Planch.) Rehder ROSACEAE - ROSE FAMILY
	USDA 5. FORTUNE'S JAPANESE SPIREA, FORTUNE'S JAPANESE MEADOWSWEET

	42-93