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, 🇨🇦 Canada and 🇺🇸 USA.   🌎︎ Map by county (🇺🇸 USA-48) (colors).

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

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