Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains.
Habitat: Moist places, lowland to subalpine.
Flowers: April-July
Origin: Native
Conservation Status: Not of concern
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Alnus alnobetula ssp. sinuata in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Alnus alnobetula ssp. sinuata checklist entry
OregonFlora: Alnus alnobetula ssp. sinuata information
E-Flora BC: Alnus alnobetula ssp. sinuata atlas page
CalPhotos: Alnus alnobetula ssp. sinuata photos