Red Alder, Oregon Alder
Synonyms: Alnus oregona, Alnus oregona var. pinnatisecta, Alnus rubra var. pinnatisecta
The dorsal leaf surface (left) and ventral leaf surface (right)of red alder as seen on Wedge Mt., Wenatchee National Forest...................June 8, 2009. The leaf margins are doubly toothed (large teeth with smaller, coarse teeth) with the blade rolled downward at the margin (not easily seen in the photo at right).