Alnus incana ssp. tenuifolia (syn: Alnus incana var. occidentalis)
Thinleaf Alder, Mountain Alder

Family: Betulaceae (Birch family)

Photo taken near Trinidad, shore of sandy beach on the Columbia River

Plant:

The bark and wood were used for yellow or red dye, the wood for making bows and snowshoes by the Okanangon-Colville. Burnt ashes were used to clean the teeth. A decoction of bark was used as a wash for sores by the Sanpoil.