| Populus alba L. [KZ99] |
2 |
white poplar |
| Populus balsamifera L. ssp. trichocarpa (Torr. & Gray ex Hook.) Brayshaw [JPM, KZ99] |
7 |
black cottonwood |
| Populus ×canescens (Ait.) Sm. [not in H&C] |
0 |
gray poplar |
| Populus grandidentata Michx. [not in H&C] |
0 |
bigtooth aspen |
| Populus nigra L. |
3 |
black cottonwood, lombardy poplar |
| Populus tremuloides Michx. |
1 |
quaking aspen |
| Salix alba L. [H&C, GA, KZ99] |
6 |
golden willow, white willow |
| Salix amygdaloides Anderss. |
0 |
peach-leaf willow |
| Salix arctica Pallas [GA, KZ99] |
6 |
arctic willow |
| Salix barclayi Anderss. |
4 |
barclay's willow |
| Salix bebbiana Sarg. |
5 |
gray willow, Bebb's willow, long-beak willow |
| Salix boothii Dorn [GA, KZ99] |
3 |
Booth's willow |
| Salix brachycarpa Nutt. [IFBC] |
8 |
shortfruit willow; short-fruited willow; small-fruit willow |
| Salix candida Flueggé ex Willd. [H&C] |
3 |
sage willow, sage-leaf willow |
| Salix cascadensis Cockerell |
3 |
Cascade willow |
| Salix commutata Bebb |
3 |
under-green willow, variable willow |
| Salix drummondiana Barratt ex Hook. |
4 |
Drummond's willow |
| Salix eastwoodiae Cockerell ex Heller [GA, KZ99, JPM] |
3 |
Sierran willow |
| Salix exigua Nutt. [GA, KZ99, H&C?] |
31 |
narrow-leaf willow |
| Salix farriae Ball |
2 |
Farr's willow |
| Salix fluviatilis Nutt. |
1 |
Columbia River willow |
| Salix fragilis L. [GA, KZ99] |
0 |
crack willow |
| Salix geyeriana Anderss. |
4 |
Geyer's willow |
| Salix glauca L. var. villosa (D. Don ex Hook.) Anderss. [GA, H&C] |
20 |
gray willow, glaucous willow |
| Salix hookeriana Barratt ex Hook. |
4 |
coastal willow |
| Salix lasiolepis Benth var. lasiolepis |
5 |
arroyo willow |
| Salix lemmonii Bebb |
5 |
Lemmon's willow |
| Salix lucida Muhl. ssp. caudata (Nutt.) E. Murr. |
3 |
gland willow, Pacific willow, shining willow |
| Salix lucida Muhl. ssp. lasiandra (Benth.) E. Murr. |
6 |
|
| Salix maccalliana Rowlee [GA, KZ99] |
0 |
Maccalla's willow |
| Salix melanopsis Nutt. [GA, KZ99] |
4 |
dusky willow |
| Salix monochroma Ball [GA, KZ99] |
1 |
one-color willow |
| Salix nivalis Hook. [GA, KZ99] |
5 |
dwarf snow willow |
| Salix pedicellaris Pursh |
6 |
bog willow |
| Salix ×pendulina Wenderoth [GA] |
5 |
weeping willow |
| Salix petiolaris Sm. [GA, KZ99] |
10 |
meadow willow |
| Salix petrophila Rydb. [GA, KZ99] |
8 |
alpine willow |
| Salix planifolia Pursh [GA] |
7 |
tea-leaved willow, plane-leaf willow |
| Salix prolixa Anderss. [GA, KZ99] |
8 |
Mackenzie's willow |
| Salix pseudomonticola Ball [GA, KZ99] |
2 |
false mountain willow |
| Salix reticulata L. [GA] |
6 |
net-vein willow, net-leaf willow |
| Salix ×rubens Schrank [GA, KZ99] |
0 |
hybrid white willow |
| Salix scouleriana Barratt ex Hook. |
7 |
Scouler's willow |
| Salix sessilifolia Nutt. |
6 |
sessile-leaf willow |
| Salix sitchensis Sanson ex Bong. |
6 |
Sitka willow |
| Salix tweedyi (Bebb ex Rose) Ball |
2 |
Tweedy's willow |
| Salix vestita Pursh |
3 |
rock willow |