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Lewis and Clark
SHOWING RECORD: 6 of 38   Black Cottonwood
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image: Black Cottonwood
Photograph from Lewis and Clark Herbarium/Academy of Natural Sciences
Black Cottonwood
(Western Balsam Poplar, California Poplar)

Populus balsamifera ssp. trichocarpa



First Noted by Expedition
July 1 or 2, 1806, at Traveler's Rest, Montana.
 

Description
The tallest native cottonwood, with open crown of erect branches and sticky, resinous buds with balsam odor. Leaves 3-6 in (7.5-15 cm) long, 2-4 in (5-10 cm) wide. Height: 60-120 ft (18-37 m). Diameter: 1-3 ft (0.3-0.9 m), sometimes much larger.
 

Habitat
Moist to wet soils of valleys, mainly on stream banks and flood plains, also on upland slopes; often in pure stands and with willows and red alder.
 

Range
Southern Alaska south to southern California and east in mountains to extreme southwestern Alberta and Montana; also local in southwestern North Dakota and northern Baja California.
 

Note
Species information from enature.com
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