Species:
Populus alba (white poplar)
Populus deltoides var. monilifera (plains cottonwood)
Populus nigra (Lombardy poplar)
Populus tremuloides (quaking aspen)
Populus trichocarpa (black cottonwood )
Salix amygdaloides (peachleaf willow)
Salix exigua var. exigua (sandbar or narrowleaf willow)
Salix lasiandra var. caudata (whiplash or shining willow)
Salix lasiolepsis (arroyo willow)
Salix lutea (yellow willow)
Salix prolixa (MacKenzie's willow)
Salix scouleriana (Scouler's willow)