Also called 🇪🇺 European alder, common alder, and ◼︎ black alder.  Although do not confuse with common winterberry/Michigan holly/◼︎ black alder  Ilex verticillata which is also sometimes called black alder.  Very-distantly related:

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

Native to 🇪🇺 Europe and nearby areas of Asia and Africa.   🗺 Map by county (🇺🇸 USA-48) (color key).   Invasive > learn+quiz Invasive > 🌐︎ global Invasive > 🌐︎ various Invasive > 🇨🇦 🇺🇸 Canada+USA Invasive > report it! Invasive > 🇺🇸 USA Invasive > Michigan   Native alternatives (Great Lakes green entries).  Adobe Acrobat Reader file (page 4)

Uses by native peoples
(Ethnobotany database)

Learn more about 🇪🇺 ◼︎ European black alder Alnus glutinosa

Treatment methods and timing (40–45°N lat.)  Adobe Acrobat Reader file Best Control Practices BCP (Ontario)  Adobe Acrobat Reader file and its Technical Bulletin  Adobe Acrobat Reader file

🔍︎ 🔍︎ images Discover Life Encyclopedia of Life Michigan Flora Missouri Botanical Garden Flora of North America USDA PLANTS db USFS Silvics Wikipedia

Navigate to pages that link here

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

🌳︎🍃︎ broadleaf branches, ╟ alternate, list of attributes, no catkins thorns pods, terminal buds w/2 ⨇ scales alder / birch / hazel / hornbeam branches  family Betulaceae

common winterberry/Michigan holly/◼︎ black alder  Ilex verticillata