black cottonwood 16 Associations

Western balsam poplar Populus trichocarpa cottonwood (generic term)

populus trichocarpa 19 Associations

black cottonwood Western balsam poplar Populus trichocarpa cottonwood (generic term)

western balsam poplar 21 Associations

black cottonwood Western balsam poplar Populus trichocarpa cottonwood (generic term)