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	ACCESSION	PLANT NAME	TAXONOMY	ORIGIN	GENEBANK	AVAILABILITY	RECEIVED	SOURCE TYPE	SOURCE DATE	COLLECTION SITE	COORDINATES	ELEVATION	HABITAT	IMPROVEMENT LEVEL	NARRATIVE
0	PI 594370	'SPIKE'	Populus hybr.	New York, United States		Historic	1996	DEVELOPED	03/13/1995					Cultivated material	Leaves delto rhombold, apex finely acuminate, base straight or broadly cuneate on the long shoot of mature trees, upper surface yellowish-green, leaf margin coarsely serrate. Trunk long, straight, and cylindrical, crown relatively narrow and open with ascending slender branches. For use as windbreak and screens for farmstead. For biomass and fuel weed production. Adapted to sandy loam soils, and clay loam. Area of adaptation New Hampshire, to northern Florida, central Texas and West to Kansas.	1520924	PI 594370
1	PI 495902	13A	Populus balsamifera L.	United States	NA	Not Available	1984	COLLECTED			39.82820500, -98.57957500	2211		Wild material	Plant deciduous, erect, branching very horizontal. Leaves appear late in spring but colors early. Some dieback observed. No seeds. Local name Balm of Gilead. Received as Populus candicans.	1390838	PI 495902
2	PI 495903	19A	Populus balsamifera L.	United States		Historic	1984	COLLECTED				2748		Wild material	Plant deciduous, erect, 6 to 7.5m tall, growing in rocky soil. Local name Balsam poplar.	1390839	PI 495903
3	PI 441217		Populus deltoides W. Bartram ex Marshall subsp. monilifera (Aiton) Eckenw.	United States		Historic	1980	COLLECTED	01/1978	Hardeman Co., Texas		455			Collected by L. Pace.	1336153	PI 441217
4	PI 441218		Populus deltoides W. Bartram ex Marshall subsp. monilifera (Aiton) Eckenw.	United States		Historic	1980	COLLECTED	01/1978	Briscoe Co., Texas		758			Collected by D. G. Lorenz.	1336154	PI 441218
5	PI 441219		Populus deltoides W. Bartram ex Marshall subsp. monilifera (Aiton) Eckenw.	United States		Historic	1980	COLLECTED	01/1978	Randall Co., Texas		818			Collected by L. Pace.	1336155	PI 441219
6	PI 432347	'Imperial'	Populus ×canadensis Moench	Michigan, United States		Historic	1979	DONATED	03/1979					Cultivar	MI-5514. Received as botanical variety eugenei.	1327283	PI 432347
7	PI 434233		Populus ×canadensis Moench	Mississippi, United States		Historic	1979	DONATED	03/1979							1329169	PI 434233
8	PI 434234		Populus simonii Carrière	Mississippi, United States		Historic	1979	DONATED	03/1979							1329170	PI 434234
9	PI 343437	NA 77129	Populus alba L.	Kyonggi, Korea, South	NA		1969	DONATED	04/01/1969					Uncertain improvement status		1667755	PI 343437
10	PI 323865	Col. No. V 66-68	Populus deltoides W. Bartram ex Marshall subsp. wislizeni (S. Watson) Eckenw.	Utah, United States		Historic	1967	COLLECTED		Along washes in San Rafael Swell area, 40km southeast Castle Dale						1714559	PI 323865
11	PI 323333	'Pyramidalis'	Populus ×canescens (Aiton) Sm.	Poland		Historic	1967	COLLECTED								1714238	PI 323333
12	PI 319318	Col. No. K-90	Populus maximowiczii A. Henry	Gangwon-do, Korea, South		Historic	1967	COLLECTED		Trail on Mt. Odai, Kangwon-do, bank of stream		780				1711308	PI 319318
13	PI 306322	'Aurora'	Populus balsamifera L.	United Kingdom		Historic	1965	COLLECTED								1702205	PI 306322
14	PI 303529	V-64-298	Populus ×acuminata Rydb.	Utah, United States		Historic	1964	COLLECTED								1680844	PI 303529
15	PI 293901		Populus tremuloides Michx.	Leningradskaja oblast', Russian Federation		Historic	1963	COLLECTED								1699432	PI 293901
16	PI 280407	'Herapa'	Populus nigra L.	Netherlands		Historic	1962	COLLECTED								1685409	PI 280407
17	PI 279448		Populus deltoides W. Bartram ex Marshall	Belgium		Historic	1962	COLLECTED								1684573	PI 279448
18	PI 279374	Clone I 488	Populus hybr.	Italy		Historic	1962	COLLECTED								1684497	PI 279374
19	PI 266678	'Erecta'	Populus tremula L.	Netherlands	NC7	Not Available	1960	DONATED	06/17/1960					Cultivar		1200976	PI 266678
20	PI 256377		Populus sp.	Italy		Historic	1959	DONATED	04/01/1959							1558744	PI 256377
21	PI 256330		Populus sp.	Italy		Historic	1959	DONATED	03/31/1959							1558707	PI 256330
22	PI 200007	51-1	Populus sp.	Sweden		Historic	1952	COLLECTED								1677498	PI 200007
23	PI 200008	51-2	Populus sp.	Sweden		Historic	1952	COLLECTED								1677499	PI 200008
24	PI 200009	51-3	Populus sp.	Sweden		Historic	1952	COLLECTED								1677500	PI 200009
25	PI 199710		Populus ×berolinensis Dippel	Netherlands		Historic	1952	COLLECTED								1677340	PI 199710
26	PI 199711		Populus deltoides W. Bartram ex Marshall subsp. deltoides	Netherlands		Historic	1952	COLLECTED								1677341	PI 199711
27	PI 199712		Populus ×canadensis Moench	Netherlands		Historic	1952	COLLECTED								1677342	PI 199712
28	PI 199713		Populus ×canadensis Moench	Netherlands		Historic	1952	COLLECTED								1677343	PI 199713
29	PI 199714		Populus ×canadensis Moench	Netherlands		Historic	1952	COLLECTED								1677344	PI 199714
30	PI 199715	'Zwitserland No. 45'	Populus ×canadensis Moench	Netherlands		Historic	1952	COLLECTED								1677345	PI 199715
31	PI 199716		Populus ×canadensis Moench	Netherlands		Historic	1952	COLLECTED								1677346	PI 199716
32	PI 199717		Populus ×canadensis Moench	Netherlands		Historic	1952	COLLECTED								1677347	PI 199717
33	PI 199718		Populus sp.	Netherlands		Historic	1952	COLLECTED								1677348	PI 199718
34	PI 199719		Populus ×canadensis Moench	Netherlands		Historic	1952	COLLECTED								1677349	PI 199719
35	PI 199720		Populus ×canadensis Moench	Netherlands		Historic	1952	COLLECTED								1677350	PI 199720
36	PI 199721		Populus ×canadensis Moench	Netherlands		Historic	1952	COLLECTED								1677351	PI 199721
37	PI 199722		Populus ×vernirubens A. Henry	Netherlands		Historic	1952	COLLECTED								1677352	PI 199722
38	PI 199723	I 30	Populus sp.	Netherlands		Historic	1952	COLLECTED								1677353	PI 199723
39	PI 199724	I 214	Populus sp.	Netherlands		Historic	1952	COLLECTED								1677354	PI 199724
40	PI 199725		Populus nigra L.	Netherlands		Historic	1952	COLLECTED								1677355	PI 199725
41	PI 199726		Populus nigra L.	Netherlands		Historic	1952	COLLECTED								1677356	PI 199726
42	PI 194188		Populus deltoides W. Bartram ex Marshall	Netherlands		Historic	1951	COLLECTED								1671232	PI 194188
43	PI 194189		Populus deltoides W. Bartram ex Marshall subsp. deltoides	Netherlands		Historic	1951	COLLECTED								1671233	PI 194189
44	PI 194190		Populus ×canadensis Moench	Netherlands		Historic	1951	COLLECTED								1671234	PI 194190
45	PI 194192		Populus ×canadensis Moench	Netherlands		Historic	1951	COLLECTED								1671236	PI 194192
46	PI 194193		Populus ×canadensis Moench	Netherlands		Historic	1951	COLLECTED								1671237	PI 194193
47	PI 194194		Populus ×canadensis Moench	Netherlands		Historic	1951	COLLECTED								1671238	PI 194194
48	PI 194195		Populus ×canadensis Moench	Netherlands		Historic	1951	COLLECTED								1671239	PI 194195
49	PI 194196		Populus ×canadensis Moench	Netherlands		Historic	1951	COLLECTED								1671240	PI 194196
50	PI 194197		Populus ×canadensis Moench	Netherlands		Historic	1951	COLLECTED								1671241	PI 194197
51	PI 194198		Populus ×vernirubens A. Henry	Netherlands		Historic	1951	COLLECTED								1671242	PI 194198
52	PI 139453	'Weeping Poplar'	Populus angustifolia E. James	Canada		Historic	1940	COLLECTED								1863009	PI 139453
53	PI 127338	No. 4350	Populus sp.	India		Historic	1938	COLLECTED	12/31/1937							1843502	PI 127338
54	PI 118068	No. 949	Populus sp.	Himachal Pradesh, India		Historic	1936	COLLECTED	07/06/1936	Hursar, Chamba State						1827507	PI 118068
55	PI 105220		Populus tristis Fisch.	Canada		Historic	1934	COLLECTED								1793875	PI 105220
56	PI 100883	F. 30646	Populus sp.	China		Historic	1932	COLLECTED								1788558	PI 100883
57	PI 99975	F. 30646	Populus sp.	China		Historic	1932	COLLECTED								1787291	PI 99975
58	PI 92522	'Chopo'	Populus nigra L. var. betulifolia (Pursh) Torr.	Spain		Historic	1931	COLLECTED								1779363	PI 92522
59	PI 92956		Populus sp.	Canada		Historic	1931	COLLECTED								1494087	PI 92956
60	PI 91317	No. 7623	Populus sp.	China		Historic	1931	COLLECTED		Collected between Tangshan and Hsiangtang						1777742	PI 91317
61	PI 81850		Populus ×generosa A. Henry	Manitoba, Canada		Historic	1929	COLLECTED								1494994	PI 81850
62	PI 77648		Populus tremula L.	Île-de-France, France		Historic	1928	COLLECTED								1495961	PI 77648
63	PI 77646		Populus alba L.	France		Historic	1928	COLLECTED								1495959	PI 77646
64	PI 69041	'Erecta'	Populus tremula L.	Stockholms län, Sweden		Historic	1926	COLLECTED								1499591	PI 69041
65	PI 67981		Populus sp.	Región Metropolitana de Santiago, Chile		Historic	1926	COLLECTED								1499495	PI 67981
66	PI 65641	No. 4562	Populus sp.	China		Historic	1925	COLLECTED	10/25/1925	Southeast of Echo						1717005	PI 65641
67	PI 65642	No. 4627	Populus sp.	Heilongjiang Sheng, China		Historic	1925	COLLECTED	10/29/1925							1717006	PI 65642
68	PI 65643	No. 4632	Populus sp.	Heilongjiang Sheng, China		Historic	1925	COLLECTED	10/30/1925	Harbin						1717007	PI 65643
69	PI 65644	No. 4634	Populus sp.	Heilongjiang Sheng, China		Historic	1925	COLLECTED	10/30/1925	Harbin						1717008	PI 65644
70	PI 65645	No. 4635	Populus sp.	Heilongjiang Sheng, China		Historic	1925	COLLECTED	10/30/1925	Harbin						1717009	PI 65645
71	PI 64787	No. 3480	Populus suaveolens Fisch.	Heilongjiang Sheng, China		Historic	1925	COLLECTED	06/27/1925	Jalatun						1716045	PI 64787
72	PI 64266	No. 5675	Populus sp.	Xizang Zizhiqu, China		Historic	1925	COLLECTED								1665583	PI 64266
73	PI 63302	No. 2183	Populus sp.	Hebei Sheng, China		Historic	1925	COLLECTED								1664629	PI 63302
74	PI 63481		Populus nigra L.	Algeria		Historic	1925	COLLECTED								1664823	PI 63481
75	PI 63419		Populus euphratica Olivier	Île-de-France, France		Historic	1925	COLLECTED								1664766	PI 63419
76	PI 63420		Populus nigra L.	Île-de-France, France		Historic	1925	COLLECTED								1664767	PI 63420
77	PI 63421		Populus tomentosa Carrière	Île-de-France, France		Historic	1925	COLLECTED								1664768	PI 63421
78	PI 62734		Populus ×rasumowskiana (R. I. Schröd. ex Regel) Dippel	England, United Kingdom		Historic	1925	COLLECTED								1664045	PI 62734
79	PI 62735		Populus szechuanica C. K. Schneid.	England, United Kingdom		Historic	1925	COLLECTED								1664046	PI 62735
80	PI 62560	No. 1915	Populus sp.	Hebei Sheng, China		Historic	1925	COLLECTED	01/27/1924							1497540	PI 62560
81	PI 63454	No. 2019	Populus sp.	Hebei Sheng, China		Historic	1925	COLLECTED	02/04/1925			540				1664797	PI 63454
82	PI 62394	Yih Yang	Populus sp.	Beijing Shi, China		Historic	1925	COLLECTED	12/12/1924							1497531	PI 62394
83	PI 62110		Populus ×canadensis Moench	England, United Kingdom		Historic	1924	COLLECTED								1500451	PI 62110
84	PI 62111		Populus ×generosa A. Henry	England, United Kingdom		Historic	1924	COLLECTED								1663338	PI 62111
85	PI 62147	No. 1296	Populus sp.	Hebei Sheng, China		Historic	1924	COLLECTED	11/08/1924							1663367	PI 62147
86	PI 61845	No. 786	Populus tomentosa Carrière	China		Historic	1924	COLLECTED	10/12/1924							1663126	PI 61845
87	PI 58646		Populus ×generosa A. Henry	Leinster, Ireland		Historic	1924	COLLECTED								1499881	PI 58646
88	PI 58483		Populus maximowiczii A. Henry	Jilin Sheng, China		Historic	1924	COLLECTED								1499815	PI 58483
89	PI 58484		Populus simonii Carrière	Jilin Sheng, China		Historic	1924	COLLECTED								1659842	PI 58484
90	PI 58021		Populus sp.	Yunnan Sheng, China		Historic	1923	COLLECTED	06/1923							1502869	PI 58021
91	PI 56871	'Erecta'	Populus tremula L.	Malmohus, Sweden		Historic	1923	COLLECTED								1502644	PI 56871
92	PI 56872	'Erecta'	Populus tremula L.	Malmohus, Sweden		Historic	1923	COLLECTED								1657263	PI 56872
93	PI 68170		Populus maximowiczii A. Henry	Massachusetts, United States		Historic	1922	COLLECTED								1499516	PI 68170
94	PI 54640	No. 669	Populus sp.			Historic	1921	COLLECTED	10/06/1921							1654148	PI 54640
95	PI 54641	Alamo de hoja persistente	Populus sp.	Magallanes, Chile		Historic	1921	COLLECTED	10/06/1921							1654149	PI 54641
96	PI 52605		Populus alba L. var. subintegerrima Lange	Alger, Algeria		Historic	1921	COLLECTED								1506193	PI 52605
97	PI 52705		Populus ×rasumowskiana (R. I. Schröd. ex Regel) Dippel	Île-de-France, France		Historic	1921	COLLECTED								1626617	PI 52705
98	PI 52368		Populus euphratica Olivier	Alger, Algeria		Historic	1921	COLLECTED								1506134	PI 52368
99	PI 51876		Populus adenopoda Maxim.	New York, United States		Historic	1920	COLLECTED								1620666	PI 51876
100	PI 51877		Populus maximowiczii A. Henry	New York, United States		Historic	1920	COLLECTED								1620665	PI 51877
101	PI 51381		Populus ×canadensis Moench	Auvergne-Rhône-Alpes, France		Historic	1920	COLLECTED								1505994	PI 51381
102	PI 49678		Populus yunnanensis Dode	Île-de-France, France		Historic	1920	COLLECTED								1617073	PI 49678
103	PI 49040		Populus adenopoda Maxim.	New York, United States		Historic	1919	COLLECTED								1615505	PI 49040
104	PI 49041		Populus maximowiczii A. Henry	New York, United States		Historic	1919	COLLECTED								1615506	PI 49041
105	PI 45704		Populus incrassata Dode	Centre-Val de Loire, France		Historic	1917	COLLECTED								1610789	PI 45704
106	PI 44424		Populus szechuanica C. K. Schneid.	England, United Kingdom		Historic	1917	COLLECTED								1609480	PI 44424
107	PI 43862		Populus maximowiczii A. Henry	Massachusetts, United States		Historic	1916	COLLECTED								1608542	PI 43862
108	PI 39900	Shui pai yang	Populus purdomii Rehder	Gansu Sheng, China		Historic	1915	COLLECTED	11/01/1914			2400				1604466	PI 39900
109	PI 39924	No. 1250	Populus simonii Carrière	Gansu Sheng, China		Historic	1915	COLLECTED	12/01/1914			2400				1604491	PI 39924
110	PI 37953	No. 1180	Populus tomentosa Carrière	Shandong Sheng, China		Historic	1914	COLLECTED	03/13/1914							1602781	PI 37953
111	PI 38232	No. 1108	Populus nigra L.	Shaanxi Sheng, China		Historic	1914	COLLECTED	02/02/1914							1603014	PI 38232
112	PI 38255	Ta pai yang shu	Populus tomentosa Carrière	Shaanxi Sheng, China		Historic	1914	COLLECTED	02/15/1914							1603034	PI 38255
113	PI 37542	Ta pai uang shu	Populus tomentosa Carrière	Shaanxi Sheng, China		Historic	1914	COLLECTED	01/20/1914							1602463	PI 37542
114	PI 37482	Pai yang shu	Populus sp.	Shaanxi Sheng, China		Historic	1914	COLLECTED	01/04/1914							1602425	PI 37482
115	PI 34789		Populus alba L.	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600177	PI 34789
116	PI 34790		Populus deltoides W. Bartram ex Marshall	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600178	PI 34790
117	PI 34791		Populus balsamifera L.	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600179	PI 34791
118	PI 34792		Populus ×berolinensis Dippel	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600206	PI 34792
119	PI 34793		Populus deltoides W. Bartram ex Marshall	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600207	PI 34793
120	PI 34794		Populus balsamifera L.	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600208	PI 34794
121	PI 34795		Populus nigra L.	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1646498	PI 34795
122	PI 34796	'Pushkiniana'	Populus nigra L.	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600209	PI 34796
123	PI 34797		Populus laurifolia Ledeb.	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600210	PI 34797
124	PI 34798		Populus simonii Carrière	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600211	PI 34798
125	PI 34799		Populus suaveolens Fisch.	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600212	PI 34799
126	PI 34800		Populus tremula L.	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600213	PI 34800
127	PI 34801		Populus sp.	Ulyanovsk, Russian Federation		Historic	1913	COLLECTED								1600214	PI 34801
128	PI 34779		Populus simonii Carrière	Pays-de-la-Loire, France		Historic	1913	COLLECTED								1600169	PI 34779
129	PI 33206	'Chopo'	Populus nigra L. var. betulifolia (Pursh) Torr.	Andalucía, Spain		Historic	1912	COLLECTED								1598750	PI 33206
130	PI 33000		Populus tremula L.	Georgia		Historic	1912	COLLECTED								1598604	PI 33000
131	PI 32775		Populus tremula L.	Västra Götalands län, Sweden		Historic	1912	COLLECTED								1520165	PI 32775
132	PI 32776		Populus nigra L.	Västra Götalands län, Sweden		Historic	1912	COLLECTED								1598092	PI 32776
133	PI 31779		Populus heterophylla L.	Maryland, United States		Historic	1911	COLLECTED								1519845	PI 31779
134	PI 30969		Populus tremula L.	Leningradskaja oblast', Russian Federation		Historic	1911	COLLECTED								1519342	PI 30969
135	PI 30921	Thal Tograk	Populus pruinosa Schrenk	Xinjiang Uygur Zizhiqu, China		Historic	1911	COLLECTED	02/14/1911							1519338	PI 30921
136	PI 30922	'Tagh terek'	Populus laurifolia Ledeb.	Xinjiang Uygur Zizhiqu, China		Historic	1911	COLLECTED	03/05/1911			2393				1596802	PI 30922
137	PI 30577		Populus tremula L.	Georgia		Historic	1911	COLLECTED								1596419	PI 30577
138	PI 30230		Populus pruinosa Schrenk	Georgia		Historic	1911	COLLECTED								1519097	PI 30230
139	PI 30147	Tagh terek	Populus nigra L.	Xinjiang Uygur Zizhiqu, China		Historic	1911	COLLECTED	12/07/1910							1595600	PI 30147
140	PI 30148	No. 882	Populus sp.	Xinjiang Uygur Zizhiqu, China		Historic	1911	COLLECTED	12/28/1910			2107				1595601	PI 30148
141	PI 30149	Tagh terek	Populus laurifolia Ledeb.	Xinjiang Uygur Zizhiqu, China		Historic	1911	COLLECTED	12/28/1910			2107				1595602	PI 30149
142	PI 30150	Hango terek	Populus alba L.	District of Columbia, United States		Historic	1911	COLLECTED	12/25/1910							1595603	PI 30150
143	PI 30054	Kubak Tograk	Populus euphratica Olivier	Sichuan Sheng, China		Historic	1911	COLLECTED	12/21/1910							1595547	PI 30054
144	PI 30055	Sa-yu terek	Populus nigra L.	Sichuan Sheng, China		Historic	1911	COLLECTED	12/04/1910							1595548	PI 30055
145	PI 30056	Ak-terek	Populus alba L.	Sichuan Sheng, China		Historic	1911	COLLECTED	12/31/1910							1595549	PI 30056
146	PI 30057	Suda terek	Populus alba L.	Sichuan Sheng, China		Historic	1911	COLLECTED	12/31/1910							1595550	PI 30057
147	PI 29357		Populus tremula L.	Northern Ireland, United Kingdom		Historic	1911	COLLECTED								1518634	PI 29357
148	PI 29148	No. 798	Populus nigra L.	Xinjiang Uygur Zizhiqu, China		Historic	1910	COLLECTED	10/15/1910							1595012	PI 29148
149	PI 29098		Populus tremula L.	Georgia		Historic	1910	COLLECTED								1518165	PI 29098
150	PI 27721	No. 482	Populus alba L.	Georgia		Historic	1910	COLLECTED								1589321	PI 27721
151	PI 27722	Bolleana	Populus alba L.	Georgia		Historic	1910	COLLECTED								1589322	PI 27722
152	PI 27723	No. 484	Populus sp.	Georgia		Historic	1910	COLLECTED								1589323	PI 27723
153	PI 26812		Populus nigra L.	Krym, Ukraine		Historic	1910	COLLECTED	01/25/1910							1588525	PI 26812
154	PI 26613		Populus suaveolens Fisch.	Leningradskaja oblast', Russian Federation		Historic	1910	COLLECTED								1523816	PI 26613
155	PI 26614		Populus ×berolinensis Dippel	Leningradskaja oblast', Russian Federation		Historic	1910	COLLECTED								1588387	PI 26614
156	PI 26355		Populus lasiocarpa Oliv.	England, United Kingdom		Historic	1909	COLLECTED								1523582	PI 26355
157	PI 24794	No. 219	Populus sp.	Tashkent, Uzbekistan		Historic	1909	COLLECTED								1586789	PI 24794
158	PI 22861	Ching yang shu	Populus suaveolens Fisch.	Shanxi Sheng, China		Historic	1908	COLLECTED	02/27/1908							1521894	PI 22861
159	PI 22355	Pai yang shu	Populus tomentosa Carrière	Hebei Sheng, China		Historic	1908	COLLECTED	01/21/1908							1584157	PI 22355
160	PI 22363	Tchau tien api yang shu	Populus simonii Carrière	Hebei Sheng, China		Historic	1908	COLLECTED	01/25/1908							1584166	PI 22363
161	PI 22447	Pau yang shu	Populus suaveolens Fisch.	Hebei Sheng, China		Historic	1908	COLLECTED	01/30/1908							1584306	PI 22447
162	PI 19531		Populus suaveolens Fisch.	Korea, North		Historic	1906	COLLECTED	08/25/1906							1576620	PI 19531
163	PI 17742		Populus sp.	China		Historic	1906	COLLECTED								1575171	PI 17742
164	PI 17743		Populus sp.	China		Historic	1906	COLLECTED								1637410	PI 17743
165	PI 18269	No. 84	Populus sp.	Beijing Shi, China		Historic	1906	COLLECTED								1575606	PI 18269
166	PI 18274	No. 89	Populus tomentosa Carrière			Historic	1906	COLLECTED								1575611	PI 18274
167	PI 17174	No. 14	Populus sp.	Hubei Sheng, China		Historic	1906	COLLECTED		Shan-hai-kwan						1574709	PI 17174
168	PI 17175	No. 40	Populus sp.	Hubei Sheng, China		Historic	1906	COLLECTED		Shan-hai-kwan						1637141	PI 17175
169	PI 16915		Populus sp.	Beijing Shi, China		Historic	1905	COLLECTED								1574399	PI 16915
170	PI 16925		Populus sp.	Beijing Shi, China		Historic	1905	COLLECTED								1574409	PI 16925
171	PI 16926		Populus sp.	Beijing Shi, China		Historic	1905	COLLECTED								1637086	PI 16926
172	PI 8336		Populus sp.	Guangdong Sheng, China		Historic	1902	COLLECTED								1547447	PI 8336
173	PI 6847		Populus sp.	Greater Athens, Greece		Historic	1901	COLLECTED								1544143	PI 6847
174	PI 5994	No. 551	Populus alba L.	Pelopónnisos, Greece		Historic	1901	COLLECTED	02/16/1901							1542769	PI 5994
175	PI 3762		Populus sp.	Bursa, Turkey		Historic	1899	COLLECTED								1538605	PI 3762
176	PI 3387		Populus nigra L.	Región Metropolitana de Santiago, Chile		Historic	1899	COLLECTED								1537571	PI 3387
177	PI 2701		Populus deltoides W. Bartram ex Marshall	Grand-Est, France		Historic	1899	COLLECTED								1536790	PI 2701
178	PI 2702	'Peuplier d'Italie pyramidal'	Populus nigra L.	Grand-Est, France		Historic	1899	COLLECTED								1536791	PI 2702
179	PI 3335		Populus alba L.	Algeria		Historic	1899	COLLECTED								1537523	PI 3335
180	PI 3344		Populus euphratica Olivier	Algeria		Historic	1899	COLLECTED								1537532	PI 3344
181	PI 2653	'Canada Poplar'	Populus deltoides W. Bartram ex Marshall	France		Historic	1899	COLLECTED								1536312	PI 2653
182	PI 2654	'Peuplier Regenere'	Populus deltoides W. Bartram ex Marshall	France		Historic	1899	COLLECTED								1536313	PI 2654
183	PI 2700	'Peuplier de Virginie Ameliore'	Populus deltoides W. Bartram ex Marshall	Grand-Est, France		Historic	1899	COLLECTED								1536359	PI 2700
184	PI 1524		Populus trichocarpa Torr. & A. Gray ex Hook.	Île-de-France, France		Historic	1898	COLLECTED								1533973	PI 1524
185	PI 1732		Populus nigra L.	France		Historic	1898	COLLECTED								1534772	PI 1732
186	PI 1733		Populus deltoides W. Bartram ex Marshall	France		Historic	1898	COLLECTED								1534773	PI 1733
187	PI 403	NEH1897	Populus balsamifera L.	Russian Federation		Historic	1898	COLLECTED						Wild material		1480951	PI 403
188	PI 339	NEH1897	Populus ×woobstii (R. I. Schröd. ex Regel) Dode	Russian Federation		Historic	1897	COLLECTED						Wild material		1480878	PI 339
189	PI 340	NEH1897	Populus balsamifera L.	Russian Federation		Historic	1897	COLLECTED						Wild material		1480879	PI 340
190	PI 341	NEH1897	Populus balsamifera L.	Russian Federation		Historic	1897	COLLECTED						Wild material		1480880	PI 341
191	PI 342	NEH1897	Populus ×moskoviensis R. I. Schröd.	Russian Federation		Historic	1897	COLLECTED						Wild material		1480881	PI 342
192	PI 343	NEH1897	Populus sp.	Russian Federation		Historic	1897	COLLECTED						Wild material		1480882	PI 343
193	Ames 36711	Dry Fork River	Populus grandidentata Michx.	Missouri, United States	NC7	Not Available	2026	COLLECTED	02/04/2026	Just south, southeast of St. James off highway 8 on top of bluff of Dry Fork River, T38N R6W SE 1/4 SE 1/4 SE 1/4 Sec. 33.	37.96354000, -91.58232000	279	High bluff on steep (60 degree) slope. Dolomite formation.	Wild material	The native range of Populus grandidentata is concentrated througout the northeastern United States with disjunct populations in far south as Kentucky and as far west as central Iowa (Little, E. L. Jr. 1971). Bigtooth aspens are known to be fast-growing trees, making for a quick source of shade in the landscape. As a pioneer species in nature, P. grandidentata is adaptable to a wide range of environments but is considered to be slightly less adaptable than quaking aspen. However, bigtooth aspen is more resistant to canker diseases than quaking aspen (Laidly 1990), potentially making it slightly longer-lived. Bark on big-tooth aspens is generally greyish to greyish-yellow or olive-green compared to quaking aspens where bark is typically white to greyish-white. Leaves and leaf serrations are larger, and the degree of suckering is lower in big-tooth aspens. Both species are well known for their leaves to quake or tremble as the lengthy petioles allow leaves to swivel in the slightest amount of wind. Populus use is well-documented throughout the world and encompasses a wide range of products including energy feedstock, wood chips for pulping fibers, veneer logs, agro-forestry, and phyto-remediation as well as several other environmental applications. Interspecific hybrids of P. grandidentata and P. canescens have superior performance in yield; Hypoxylon canker resistance; and rooting ability compared to pure, N. American aspen genetics. This accession represents genetics acquired from an extreme, perhaps unusual, southern disjunct in Phelps County, Missouri on a steep, dolomite bluff above the Dry Fork River. Despite debate on whether big-tooth aspen in Missouri represents escapes from cultivation or relicts from the past, this accession is currently persisting in a very high-quality native plant community. In addition, big-tooth aspen is not a commonly planted species nor recommended for planting in Missouri. The Missouri Natural Heritage Program tracks this taxon as being a species of concern in the state and thus treated as a native member of the flora of Missouri. This accession is presumed to represent a single clone covering an area of approximately 15 yards x 10 yards totalling 24 ramets where the largest ramet is estimated at 35' in height and 5.5" DBH. Due to this accession originating fom an extreme southern location, it is suspected that this accession would have excellent heat and drought tolerance compared to genetics originating from the typical range in the northeastern U.S.	2193480	Ames 36711
194	NA 87336	(P. tremula x P. tremuloides)	Populus hybr.		NA	Not Available	2023							Cultivated material	Full name as recorded at U.S. National Arboretum: Populus (P. tremula x P. tremuloides). An existing specimen (one relatively large plant, plus some smaller clonal stems originating from the root system) growing east of the old Salix planting behind the National Bonsai and Penjing Museum, where evidently there was once a small collection of Populus. According to Dr. Alan Whittemore, this is probably the hybrid rather than P. tremula or P. tremuloides. There have not been accessions of this hybrid at USNA previously, but it is possible that the plant came in misidentified as one of the parents; it could possibly have originated here, as well. The plant is thriving despite being completely neglected, in a climate that should be nearly too hot. It may be of interest for this reason. -SBL Form received: unknown propagule type.	2158085	NA 87336
195	Ames 36138	Muscatatuck NWR	Populus heterophylla L.	Indiana, United States	NC7		2023	COLLECTED	05/30/2023	Muscatatuck National Wildlife Refuge located 4.37 miles east, southeast of Seymour, T6N R6E SW 1/4 Sec. 24	38.94292000, -85.81076600	159	Edge of stagnant swamp along road. Soils rather mucky/heavy clay.	Wild material	Native to North America, this deciduous tree has a native range that covers the Atlantic coastal plain concentrated in the Carolinas and also along the Mississippi and Ohio Rivers along with various, tiny disjunct populations widely scattered across the southeast U.S. (Little, 1971). As an obligate wetland plant, the soils that this species inhabits is typically heavy clay (ranging 24 to 65%) and slightly acidic (soil pH ranges from 4.6 to 5.9) (Johnson 1990). Typical habitat is bottomlands/floodplains that generally have standing, shallow water. Sites that are often too wet for P. deltoides are suitable for P. heterophylla. Swamp Cottonwood can reach 10-20 meters in height and generally has an upright, rounded form. Broadly ovate leaves are rather large reaching up to 25 cm in length and nearly 15 cm wide with abaxial surfaces usually pubescent to partially glabrate. As with many other species in Salicaceae, P. heterophylla is dioecious with staminate and pistillate catkins appearing in early spring and reaching up to 10 and 15 cm in length, respectively. Seeds are dispersed in spring through early summer. Swamp Cottonwood is distinguishable from other Populus largely due to the distinctly cordate leaf bases and distinctive orange-brown pith in young twigs (McMaster 2003). Ornamental characteristics include golden yellow fall color. This taxon is essentially non-existent in the nursery trade and extremely rare in botanical garden and arboretum collections. Due to this species ability to grow in anaerobic, soils heavy in clay, this species may perform well in the typical urban landscape. Its potential to withstand extreme, drought despite being an obligate wetland plant may be similar to that found in Taxodium distichum. Genetics of this accession were collected in southern Indiana. Specimens sampled in nature were approximately 40-50' in height and were clonally (vegetative) spreading by rhizomes.	2158343	Ames 36138
196	NA 88418	NV030-701	Populus fremontii S. Watson	Nevada, United States	NA		2020							Wild material	Tree growing to approximately 90 feet tall.	2106485	NA 88418
197	NA 88419	NV030-702	Populus fremontii S. Watson	Nevada, United States	NA		2020							Wild material	Tree growing to approximately 90 feet tall.	2106486	NA 88419
198	NA 88420	NV030-703	Populus fremontii S. Watson	Nevada, United States	NA		2020							Wild material	Tree growing to approximately 90 feet tall.	2106487	NA 88420
199	NA 86512	'NE Arb'	Populus tremuloides Michx.		NA	Not Available	2020							Cultivar	Full name as recorded at U.S. National Arboretum: Populus tremuloides 'NE Arb' PRAIRIE GOLD. Obtained primarily to represent the state of Utah in the state trees tour, as it is a more heat-tolerant selection of the species. The method of propagation was not specified on the invoice, but material was later confirmed by Guy Meacham of JFS to have been grown from tissue culture.	2154764	NA 86512
200	NA 86324	'Colmar'	Populus deltoides W. Bartram ex Marshall		NA	Not Available	2019							Cultivar	Full name as recorded at U.S. National Arboretum: Populus deltoides 'Colmar'. A rare selection from the University of Illinois with unusually good disease resistance for the species.	2154662	NA 86324
201	WLP 1553	TK2019-02	Populus ×canescens (Aiton) Sm.	Mtskheta-Mtianeti, Georgia	NA		2019	COLLECTED	05/08/2019	Mtskheta (municipality/district); ; Armazi gorge to the west of Dzegvi village.	41.83866000, 44.68065000	466	Fragmented riparian woodland.		3000+ seeds collected from 13 individuals.	2109130	WLP 1553
202	WLP 1554	TK2019-07	Populus nigra L.	Mtskheta-Mtianeti, Georgia	NA		2019	COLLECTED	05/19/2019	Mtskheta (municipality/district); ; Near the Mtkvari River north-northwest of Tbilisi. [Locality given erroneously as "Environs village Rkoni", which was evidently copied by mistake from the previous collection.]	41.83606000, 44.72288000	461	Deciduous woodland.		1800+ seeds collected from 10 individuals.	2109131	WLP 1554
203	WLP 1555	TK2019-11	Populus tremula L.	Imereti, Georgia	NA	Not Available	2019	COLLECTED	06/05/2019	Tkibouli (municipality/district); ; Nakerala Pass.	42.37950000, 43.02250000	1018	Edges of deciduous woodland and isolated tree stands.		300+ seeds collected from 22 individuals.	2109132	WLP 1555
204	Ames 33965	JDC/PG/2017/013/767	Populus grandidentata Michx.	Iowa, United States	NC7		2017	COLLECTED	05/07/2017	Private property approximately 2.98 miles west of Luther, T83N R26W NE 1/4 SE 1/4 NE 1/4 Sec. 28., Boone County	41.97486900, -93.87548500	328	Woodland. Deciduous forest.	Wild material	The native range of Populus grandidentata is concentrated througout the northeastern United States with disjunct populations in far south as Kentucky and as far west as central Iowa (Little, E. L. Jr. 1971). Bigtooth aspens are known to be fast-growing trees, making for a quick source of shade in the landscape. As a pioneer species in nature, P. grandidentata is adaptable to a wide range of environments but is considered to be slightly less adaptable than quaking aspen. However, bigtooth aspen is more resistant to canker diseases than quaking aspen (Laidly 1990), potentially making it slightly longer-lived. Bark on big-tooth aspens is generally greyish to greyish-yellow or olive-green compared to quaking aspens where bark is typically white to greyish-white. Leaves and leaf serrations are larger, and the degree of suckering is lower in big-tooth aspens. Both species are well known for their leaves to quake or tremble as the lengthy petioles allow leaves to swivel in the slightest amount of wind. Populus use is well-documented throughout the world and encompasses a wide range of products including energy feedstock, wood chips for pulping fibers, veneer logs, agro-forestry, and phyto-remediation as well as several other environmental applications. Interspecific hybrids of P. grandidentata and P. canescens have superior performance in yield; Hypoxylon canker resistance; and rooting ability compared to pure, N. American aspen genetics. This accession represents genetics acquired from the Des Moines River Valley of central Iowa and considered a disjunct population. P. grandidentata is infrequent to somewhat common throughout parts of the Des Moines River Valley, but very localized. The next closest, native population would be found in Hardin County (Iowa) approximately 50 miles to the northeast near Eldora. In central Iowa, this accession has been noted to have excellent, yellow fall color that typically peaks in mid-October (e.g. 21 October 2015). Fruits usually mature in early May (e.g. 3 May 2017) coinciding with flower initiation on local genotypes of Prunus virginiana. Specimens sampled in nature measuring approximately 60' in height and 16-22" dbh. Due to this accession originating from the western and southern edge of the species native range, it is suspected that this accession would have excellent heat and drought tolerance compared to genetics from areas in the northeastern U.S.	1949856	Ames 33965
205	Ames 33917	JDC/PT/2017/005/759	Populus tremuloides Michx.	Minnesota, United States	NC7	Not Available	2017	COLLECTED	03/15/2017	Southeast side of Mud Lake approximately 8.8 miles northwest of Faribault, T110N R22W NW 1/4 NW 1/4 NW 1/4 Sec. 12, Rice County	44.35497300, -93.42132700	347	Mixed, upland woods. Growing with Viburnum lentago, Cornus racemosa, Quercus rubra, Fraxinus pennsylvanica, and Ulmus sp.	Clone	Very white bark from branch tips to ground level. Tallest specimen in clump approximately 45'. Very close to peak bloom (03/15/2017) when sampled at collection site. Female.	1946984	Ames 33917
206	NA 84085	('Zhonghong' reversion)	Populus deltoides W. Bartram ex Marshall		NA	Not Available	2016							Clone	Full name as recorded at the U.S. National Arboretum: Populus deltoides ('Zhonghong' reversion). Received as Populus deltoides 'Hongye', but later changed to P. deltoides 'Zhonghong' before renaming due to complete reversion to the wild-type coloration. From Dr. Donglin Zhang, University of Georgia, who collected cuttings from Lishui University campus, Lishui, Zhejiang, China. The name under which the accession was received appears to be abbreviated from 'Zhonghuahongye', which was apparently officially named 'Zhonghong' later. It was discovered in 2000 at the Henan Academy of Forestry in Shangqiu, Henan Province, China as a reddish-leaved (or purple-leaved) bud-sport of Populus deltoides 'Zhonglin-2025'. Both this cultivar and its sport-parent are often listed as cultivars of Populus x euramericana (=P. x canadensis, correctly), but 'Zhonglin-2025' has been tested and confirmed to be pure P. deltoides. Further accession note: "our has a chimeral sport/ photographed it (black/green); in the same catalog as the variegated catalpa". [NOTE: as of May 2024, it does not appear that this plant has ever exhibited the strong foliage color that is supposed to characterize the cultivar, and it is likely a reversion due to an unstable chimera (Kevin Conrad indicates that it has never shown strong purple/red coloration at any point).]	2153523	NA 84085
207	NA 83664	NA 83664	Populus tomentosa Carrière		NA	Not Available	2015							Cultivated material	Full name as recorded at U.S. National Arboretum: Populus x tomentosa.	2157648	NA 83664
208	NA 83665	NA 83665	Populus szechuanica C. K. Schneid. var. tibetica C. K. Schneid.		NA	Not Available	2015							Cultivated material	Full name as recorded at U.S. National Arboretum: Populus szechuanica var. tibetica.	2153310	NA 83665
209	NA 83666	'Kocabey'	Populus nigra L.		NA	Not Available	2015							Cultivar	Full name as recorded at U.S. National Arboretum: Populus nigra 'Kocabey'.	2153311	NA 83666
210	NA 83667	NA 83667	Populus pseudosimonii Kitag.		NA	Not Available	2015							Cultivated material	Full name as recorded at U.S. National Arboretum: Populus pseudosimonii.	2153312	NA 83667
211	NA 83668	NA 83668	Populus szechuanica C. K. Schneid.		NA	Not Available	2015							Cultivated material	Full name as recorded at U.S. National Arboretum: Populus szechuanica.	2153313	NA 83668
212	NA 83669	NA 83669	Populus purdomii Rehder		NA	Not Available	2015							Cultivated material	Full name as recorded at U.S. National Arboretum: Populus purdomii.	2153314	NA 83669
213	NA 83670	'Gazi'	Populus nigra L.		NA	Not Available	2015							Cultivar	Full name as recorded at U.S. National Arboretum: Populus nigra 'Gazi'.	2153315	NA 83670
214	W6 47200	POAN3-SOS-WY050-29-FREMONT-12	Populus angustifolia E. James	United States		Historic	2014	COLLECTED	2012				.	Wild material		1916937	W6 47200
215	W6 36717	NV030-134	Populus fremontii S. Watson	United States		Historic	2009							Wild material	Inactive Zero germination	1826893	W6 36717
216	NA 77486	NA 77486	Populus deltoides W. Bartram ex Marshall	South Carolina, United States	NA		2008	COLLECTED	1977	Swampy edge of unknown creek, east of Clover. [Present accession represents seedlings of trees that were grown from cuttings taken at this location; presumably found at the home of Ron Lance.]			Swampy edge of creek.	Cultivated material		1899477	NA 77486
217	NA 77487	NA 77487	Populus heterophylla L.	North Carolina, United States	NA		2008	COLLECTED	05/1975	Floodplain of Roanoke River. [Present accession represents seedlings of trees that were removed from this location and then cultivated; presumably found at the home of Ron Lance.]			Growing in silt deposit.	Cultivated material		1899478	NA 77487
218	Ames 29046	'NE-Arb'	Populus tremuloides Michx.	Nebraska, United States	NC7	Not Available	2007	COLLECTED	NEAR 1975	North portion of the Platte River Valley, northeast of Columbus.	41.48202500, -97.31057700		Pasture.	Cultivar	Selected for its resistance to leaf spot, especially under high humidities. Good yellow fall color with whitish bark in Midwest U.S. Rapid growth rate without chlorosis problems. Upright slender growth habit. Annual growth averages around 3 to 5 feet per year. Tolerates very dry conditions and heavy clay soils, but prefers well-drained sandy-loam soils. Female clone.	1726624	Ames 29046
219	W6 26792	169563	Populus angustifolia E. James	United States		Historic	2005	COLLECTED	07/02/2002			1521	Oak chaparral. Streamside/riparian. Associated with Acer negundo, Prunus virginiana, Chrysothamnus nauseosus, Poa bulbosa, Amelanchier spp., Acer grandidentatum, Rhus trilobata.	Wild material	Tree 6-21 meters tall.	1673831	W6 26792
220	W6 27248	OR015-04	Populus trichocarpa Torr. & A. Gray ex Hook.	United States		Historic	2005							Wild material	Inactive Zero germination	1674282	W6 27248
221	NA 74194	'Gnarly Poplar'	Populus hybr.		NA	Not Available	2004							Cultivar	Full name as recorded at U.S. National Arboretum: Populus 'Gnarly Poplar'. Scott Aker's (Gardens Unit Leader) cooperative project.	2149965	NA 74194
222	NA 65031	HLJ018	Populus koreana Rehder	Heilongjiang Sheng, China	NA	Not Available	1993	COLLECTED	09/01/1993	Ping Shan	45.33333600, 127.40000200	350	Disturbed woodland.	Wild material		1511174	NA 65031
223	NA 66371	NA 66371	Populus deltoides W. Bartram ex Marshall subsp. monilifera (Aiton) Eckenw.		NA	Not Available	1993							Uncertain improvement status	Full name as recorded at U.S. National Arboretum: Populus deltoides subsp. monilifera. No source/donor listed on accession paperwork; provenance type is unknown. This seems to mostly conform to subsp. monilifera (two basalaminar glands, long-acuminate apex, roughly equal foliar length and width, with some leaves somewhat longer than wide), but seems slightly unusual for the species. -SBL	2147735	NA 66371
224	NA 66336	NA 66336	Populus deltoides W. Bartram ex Marshall subsp. monilifera (Aiton) Eckenw.	Kansas, United States	NA	Not Available	1992							Wild material	Notes: Source-location: Riley County, KS. [Source/donor not listed on accession paperwork; county misspelled "Railey" in internal records prior to 2026. ID determined as subsp. monilifera based on presence of two basilaminar glands, roughly equal width to length, and more or less long-acuminate leaf apex.] Note: this would have been obtained through the Kansas Forest Service, but it is uncertain if the accession came directly from them or if it was simply arranged to be sent by them (and if so, the sender is unknown at this time, but almost certainly would have been located in Kansas).	1950710	NA 66336
225	NA 66347	NA 66347	Populus deltoides W. Bartram ex Marshall		NA	Not Available	1991								[Sources previously recorded were identical to NA 66333, Mason State Nursery ex Illinois Dept. of Conservation, which appears to be a mistake; true source for this accession is unknown. This could turn out to be NA 63205, P. deltoides 'Platte', which was obtained at the same time to be used for the Nebraska plot but never had living plants recorded. No description of that cultivar could be located, but present plants of NA 66347 key out to P. deltoides subsp. deltoides, eastern cottonwood. -SBL] [Update: it is now confirmed that these plants were really NA 63205, 'Platte', based on information found in USNA Archives documentation; records for the plants have been transferred, but only one remains alive in 2026.]	1950964	NA 66347
226	NA 63205	'Platte'	Populus deltoides W. Bartram ex Marshall subsp. deltoides	Nebraska, United States	NA	Not Available	1991	COLLECTED	PRE 1976	Near the confluence of the Platte and Missouri rivers.				Cultivar	Full name as recorded at the U.S. National Arboretum: Populus deltoides subsp. deltoides For Grove of State Trees, Nebraska. Missing information. [This may have been accessioned later without info as NA 66347, which see. -SBL] Excerpt from a letter dated March 8, 1991 from Gary Hergenrader: "Nebraskas' trees for the National Grove of State Trees will be on their way to Washington within the next few days. They are clonally propagated male trees, hence cottonless, from a clone released 8 years ago to the nursery trade as "Platte" cottonwood. The "Platte" clone was selected, along with three others, as the best of more than 100 sources evaluated (Ying and Bagley, 1976) in Nebraska. "Platte" was collected near the confluence of the Platte and Missouri rivers in Nebraska. It is the perfect tree to represent our state in the National Grove of State Trees."	2197534	NA 63205
227	NA 61624	NA 61624	Populus maximowiczii A. Henry	Gangwon-do, Korea, South	NA	Not Available	1989	COLLECTED	06/08/1989	Sorak San, Sokcho Shi. Near Sorak Tourist Hotel.	38.17222222, 128.47638889	260		Wild material		1506685	NA 61624
228	NA 58301	NA 58301	Populus sieboldii Miq.	Japan		Historic	1986	COLLECTED						Wild material		1111619	NA 58301
229	Ames 2953	'Tower'	Populus ×canescens (Aiton) Sm.	Manitoba, Canada		Historic	1982	DONATED	04/1982					Cultivar	Tall, rather columnar, fast-growing tree. Distributed for regional trial in 1982.	1022682	Ames 2953
230	NA 42901	'Pyramidalis'	Populus tremula L.	Former, Soviet Union		Historic	1979	DEVELOPED						Cultivar	Upright, pyramidal tree.	1022689	NA 42901
231	NA 33459	NA 33459	Populus tremuloides Michx.	Virginia, United States	NA	Not Available	1971	DONATED	05/17/1971					Uncertain improvement status	Five plants received as Populus sp. Plant growing at the edge of the Fern Valley Meadow (now suckering well) appears to be P. tremuloides, and seems all but certain to be this accession based on records review. According to the old card, the plants were planted in Fern Valley and had many suckers in 1985, which also agrees well with P. tremuloides. -SBL	2192797	NA 33459