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

Native to the 🌐︎ Northern Hemisphere:  🇪🇺 Europe, Asia, and 🇨🇦 🇺🇸 🇬🇱 North America including Greenland.   🗺 Map by county (🇺🇸 USA-48) (color key).

Different subspecies specialize in different areas, including:

Uses by native peoples
(Ethnobotany database)

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

Learn more about ◼︎ green alder Alnus viridis

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