[The Alders of Denali National Park and Preserve]
Siberian Alder

Alnus viridis ssp. fruticosa

Synonym: Alnus viridis var. fruticosa

Leaves of Siberian Alder: Alnus viridis ssp. fruticosa (Synonym: Alnus viridis var. fruticosa)
The photo above shows the leaves of what appears to be mountain alder as seen on Cranberry Ridge at Camp Denali, Denali National Park....................August 24, 2006. Note the flat blades with the margins wich are doubly serrate but not wavy margined. The leaf tips range from acute to acuminate while those of Alnus viridis ssp. crispa are obtuse to acute.

Buds of Siberian Alder: Alnus viridis ssp. fruticosa (Synonym: Alnus viridis var. fruticosa)

The photo above shows a close-up of the leaf buds of mountain alder as seen at Camp Denali.................August 26, 2006.

Female "cones" of Siberian Alder: Alnus viridis ssp. fruticosa (Synonym: Alnus viridis var. fruticosa)

The cones of mountain alder.
Paul Slichter