Siberian Alder
Alnus viridis ssp. crispa
Synonyms: Alnus crispa, Alnus crispa var. elongata, Alnus crispa var. mollis, Alnus x hultenii, Alnus viridis var. crispa
The photo above shows the upper surface of a leaf of what appears to be mountain alder as seen at the park entrance, Denali National Park and Preserve.................September 4, 2009. Note the assymetric base to the blade and the numerous acute teeth along the margin.
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Close-ups of the dorsal (left) and ventral (right) leaf surfaces of mountain alder as seen at the park entrance, Denali National Park and Preserve.................September 4, 2009.
Paul Slichter