[The Birch Family East of the Cascade Mountains of Oregon and Washington]
Alders East of the Cascade Mountains of Oregon and Washington

The Genus Alnus

 

 

Gray Alder, Mountain Alder, Thinleaf Alder: Alnus incana ssp. tenuifolia (Synonyms: Alnus incana var. occidentalis, Alnus rugosa, Alnus tenuifolia) -

White Alder, California Alder: Alnus rhombifolia (Synonym: Alnus rhombifolia var. bernardina) -

Red Alder, Oregon Alder: Alnus rubra (Synonyms: Alnus oregona, Alnus oregona var. pinnatisecta, Alnus rubra var. pinnatisecta) -

Sitka Alder, Wavy-leaved Alder: Alnus viridis ssp. sinuata (Synonyms: Alnus alnobetula, Alnus crispa ssp. laciniata, Alnus crispa ssp. sinuata, Alnus sinuata, Alnus sitchensis, Alnus viridis var. sinuata, Duschekia sinuata) -

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