Distribution: Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Moist places, streamsides, and avalanche chutes from low to middle elevations.
Flowers: March-May
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Alnus incana ssp. tenuifolia in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Alnus incana ssp. tenuifolia checklist entry
OregonFlora: Alnus incana ssp. tenuifolia information
E-Flora BC: Alnus incana ssp. tenuifolia atlas page
CalPhotos: Alnus incana ssp. tenuifolia photos