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; Torr. & A.Gray ex. Hook.
	Range
Synonyms
	Populus balsamifera subsp. trichocarpa (Torr. & A.Gray ex Hook.) Brayshaw;

Populus trichocarpa, the black cottonwood,^[1] western balsam-poplar^[2] 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.^[3]

^ NRCS. "Populus balsamifera subsp. trichocarpa". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 31 January 2016.
^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
^ Norris, Kyle (June 28, 2019). "Have you noticed all the cotton fluff in the air?". KUOW (NPR network). Retrieved 2025-05-22.

[ReferenceA-1] NRCS. "Populus balsamifera subsp. trichocarpa". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 31 January 2016.

[BSBI07-2] BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.

[3] Norris, Kyle (June 28, 2019). "Have you noticed all the cotton fluff in the air?". KUOW (NPR network). Retrieved 2025-05-22.

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