Part of alder  genus Alnus in alder / birch / hazel / hornbeam  family Betulaceae in bayberry / beech / birch / oak / walnut  order Fagales.

Native to 🇺🇸 USA west of the 🗻︎ Rocky Mountains.   ▭ 🌎︎ Map by county (🇺🇸 USA-48) (colors), ▭ 🌎︎ map (North America, Central America).  Adobe Acrobat Reader file

Uses by native peoples
(Ethnobotany database)

Alnus hosts caterpillars of 267 species
of butterflies and moths, in some areas.

Learn more about ◼︎ white alder Alnus rhombifolia

🔍︎ 🔍︎ images Discover Life Encyclopedia of Life Flora of North America USDA PLANTS db USFS Wikipedia

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🏠︎ 🌳︎ broadleaves, ╟ alternate, 🍂︎ simple non-lobed ▲▴▲▴ doubly-toothed