Populus trichocarpa
| Populus trichocarpa | |
|---|---|
| Black cottonwood | |
| Scientific classification | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Eudicots | 
| Clade: | Rosids | 
| Order: | Malpighiales | 
| Family: | Salicaceae | 
| Genus: | Populus | 
| Section: | Populus sect. Tacamahaca | 
| Species: | P. trichocarpa | 
| Binomial name | |
| Populus trichocarpa | |
| Range | |
| Synonyms | |
| 
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Populus trichocarpa, the black cottonwood, western balsam-poplar or California poplar, is a deciduous broadleaf tree species native to western North America. It is used for timber, and is notable as a model organism in plant biology. The tree is notable for the seed-carrying cottony fluff it releases into the air each spring.