Salicaceae | |
Populus canadensis var. angustifolia
| (E. James) Wesm. | Prodr. 16(2[2]): 329 | 1868 |
Salicaceae | |
Populus canadensis var. eugenei
| Rehder | Man. Cult. Tress and Shrubs 91 | 1927 |
Salicaceae | |
Populus canadensis var. fremontii
| (S. Watson) Kuntze | Revis. Gen. Pl. 2: 643 | 1891 |