| 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 | | Not Available | 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 | 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 |
| 194 | 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 |
| 195 | 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 |
| 196 | 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 |
| 197 | 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 |
| 198 | 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 |
| 199 | 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 |
| 200 | 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 |
| 201 | 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 |
| 202 | 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 |
| 203 | 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 | Superior, yellow fall color peaked on 21 October 2015. Fruits matured on 3 May 2017 coinciding with flower initiation on local genotypes of Prunus virginiana. Specimens sampled approximately 60' in height and 16-22" dbh. Only 3 females (possibly different genets) and 1 male noted in immediate area. Seed production extremely poor in 2017 likely due to environmental conditions or lack of pollen availability. P. grandidentata is somewhat common throughout parts of the Des Moines River Valley in Boone County, but very localized and would be considered a disjunct population. The next closest population would be noted in Hardin County (Iowa). The native range for P. grandidentata is largely throughout most of the northeastern U.S. | 1949856 | Ames 33965 |
| 204 | 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 |
| 205 | NA 84085 | 'Zhonghong' | Populus deltoides W. Bartram ex Marshall | | NA | | Not Available | 2016 | | | | | | | Cultivar | 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 |
| 206 | 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 |
| 207 | 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 |
| 208 | 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 |
| 209 | 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 |
| 210 | 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 |
| 211 | 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 |
| 212 | 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 |
| 213 | W6 47200 | POAN3-SOS-WY050-29-FREMONT-12 | Populus angustifolia E. James | United States | |  | Historic | 2014 | COLLECTED | 2012 | | | | . | Wild material | | 1916937 | W6 47200 |
| 214 | W6 36717 | NV030-134 | Populus fremontii S. Watson | United States | |  | Historic | 2009 | | | | | | | Wild material | Inactive Zero germination | 1826893 | W6 36717 |
| 215 | NA 77486 | NA 77486 | Populus deltoides W. Bartram ex Marshall | South Carolina, United States | NA | | Not Available | 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 |
| 216 | NA 77487 | NA 77487 | Populus heterophylla L. | North Carolina, United States | NA | | Not Available | 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 |
| 217 | 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 |
| 218 | 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 |
| 219 | W6 27248 | OR015-04 | Populus trichocarpa Torr. & A. Gray ex Hook. | United States | |  | Historic | 2005 | | | | | | | Wild material | Inactive Zero germination | 1674282 | W6 27248 |
| 220 | 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 |
| 221 | 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 |
| 222 | 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 |
| 223 | NA 66336 | NA 66336 | Populus deltoides W. Bartram ex Marshall subsp. monilifera (Aiton) Eckenw. | | NA | | Not Available | 1992 | | | | | | | Wild material | Notes: Source-location: Railey County, KS. [Source/donor not listed on accession paperwork. 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. -SBL] | 1950710 | NA 66336 |
| 224 | NA 66347 | NA 66347 | Populus deltoides W. Bartram ex Marshall | | NA | | Not Available | 1991 | | | | | | | | | 1950964 | NA 66347 |
| 225 | 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 |
| 226 | NA 58301 | NA 58301 | Populus sieboldii Miq. | Japan | | | Historic | 1986 | COLLECTED | | | | | | Wild material | | 1111619 | NA 58301 |
| 227 | 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 |
| 228 | NA 42901 | 'Pyramidalis' | Populus tremula L. | Former, Soviet Union | | | Historic | 1979 | DEVELOPED | | | | | | Cultivar | Upright, pyramidal tree. | 1022689 | NA 42901 |