| Populus alba L. [FNA7] |
2 |
white poplar |
| Populus ×canescens (Ait.) Sm. [Stace, 1997; not in H&C] |
0 |
gray poplar |
| Populus nigra L. [Stace, 1997; not in H&C] |
3 |
black cottonwood, lombardy poplar |
| Populus tremuloides Michx. [FNA7, H&C] |
1 |
quaking aspen |
| Populus trichocarpa Torr. & Gray ex Hook. [FNA7, H&C] |
7 |
black cottonwood |
| Salix alba L. [FNA7, H&C] |
6 |
golden willow, white willow |
| Salix amygdaloides Anderss. [FNA7, H&C] |
0 |
peach-leaf willow |
| Salix arctica Pallas [FNA7, H&C] |
6 |
arctic willow |
| Salix barclayi Anderss. [FNA7, H&C] |
4 |
barclay's willow |
| Salix bebbiana Sarg. [FNA7, H&C] |
5 |
gray willow, Bebb's willow, long-beak willow |
| Salix boothii Dorn [FNA7; IFBC, not in H&C] |
3 |
Booth's willow |
| Salix brachycarpa Nutt. var. brachycarpa [FNA7, H&C] |
8 |
small-fruit willow, short-fruited willow |
| Salix candida Flueggé ex Willd. [FNA7, H&C] |
3 |
sage willow, sage-leaf willow |
| Salix cascadensis Cockerell [FNA7, H&C] |
3 |
Cascade willow |
| Salix columbiana (Dorn) Argus [FNA7] |
2 |
Columbia River willow |
| Salix commutata Bebb [FNA7, H&C] |
3 |
under-green willow, variable willow |
| Salix drummondiana Barratt ex Hook. [FNA7, H&C] |
4 |
Drummond's willow |
| Salix eastwoodiae Cockerell ex Heller [FNA7] |
3 |
Sierran willow |
| Salix exigua Nutt. var. exigua [FNA7, H&C] |
22 |
narrow-leaf willow, coyote willow |
| Salix farriae Ball [FNA7, H&C] |
2 |
Farr's willow |
| Salix fragilis L. [GA, KZ99] |
0 |
crack willow |
| Salix geyeriana Anderss. [FNA7, H&C] |
4 |
Geyer's willow |
| Salix glauca L. var. villosa (D. Don ex Hook.) Anderss. [FNA7] |
5 |
gray willow, glaucous willow |
| Salix hookeriana Barratt ex Hook. [FNA7, H&C] |
4 |
coastal willow |
| Salix lasiandra Benth. var. caudata (Nutt.) Sudworth [FNA7, H&C] |
3 |
Pacific willow |
| Salix lasiandra Benth. var. lasiandra [FNA7, JPM2, H&C] |
7 |
Pacific willow |
| Salix lasiolepis Benth. [FNA7, H&C] |
6 |
arroyo willow |
| Salix maccalliana Rowlee [FNA7; not in H&C] |
0 |
Maccalla's willow |
| Salix melanopsis Nutt. [FNA7; not in H&C] |
7 |
dusky willow |
| Salix monochroma Ball [FNA7] |
1 |
one-color willow |
| Salix nivalis Hook. [FNA7] |
5 |
dwarf snow willow |
| Salix pedicellaris Pursh [FNA7, H&C] |
6 |
bog willow |
| Salix ×pendulina Wenderoth [FNA7] |
5 |
weeping willow |
| Salix petrophila Rydb. [FNA7] |
8 |
alpine willow |
| Salix planifolia Pursh [FNA7] |
7 |
tea-leaved willow, plane-leaf willow |
| Salix prolixa Anderss. [FNA7] |
8 |
Mackenzie's willow |
| Salix pseudomonticola Ball [FNA7] |
2 |
false mountain willow |
| Salix ×rubens Schrank [GA, KZ99] |
0 |
hybrid white willow |
| Salix scouleriana Barratt ex Hook. [FNA7, H&C] |
7 |
Scouler's willow |
| Salix sessilifolia Nutt. [FNA7, H&C] |
6 |
sessile-leaf willow |
| Salix sitchensis Sanson ex Bong. [FNA7, H&C] |
6 |
Sitka willow |
| Salix tweedyi (Bebb ex Rose) Ball [FNA7, H&C] |
2 |
Tweedy's willow |
| Salix vestita Pursh [FNA7, H&C] |
3 |
rock willow |