Birch Trees Found East of the Cascade Mountains of Oregon and Washington
Betulaceae
Bog Birch: Betula glandulosa. Note the suborbicular leaf blades. Similar Betual pumila has longer leaves with broadly acute tips.
Alders: The Genus Alnus -
Birch: The Genus Betula -
Filberts and Hazelnuts: The Genus Corylus -