Alnus viridis (Vill.) DC.  
Family: Betulaceae
American green alder, green alder, mountain alder, Sitka alder
Alnus viridis image
Flora.cyberia  
Etymology: Alnus: ancient Latin name derived from the Celtic, "growth along streams"
Plants: perennial shrub to 12' tall; grayish brown, smooth bark with pale lenticels; alone or in thickets
Leaves: leaf oval to elliptic, dark green, leathery, edges finely toothed, somewhat resin-coated
Flowers: winter buds almost stalkless, male catkins 1"-3 1/2" long; blooms in spring
Fruits: oval, stalked fruit clusters
Habitat: moist to wet; streambanks, lakeshores, bog edges or sandy to gravelly slopes or flats
Conservation Status: Native
Alnus viridis image
Emmet J. Judziewicz  
Alnus viridis image
Emmet J. Judziewicz  
Alnus viridis image
Dennis W. Woodland  
Alnus viridis image