[Alders: The Genus Alnus West of the Cascade Mountains of Oregon and Washington]

Green Alder, Siberian Alder, Sitka Alder, Wavy-leaf Alder

Alnus viridis ssp. sinuata

Synonyms: Alnus alnobetula, Alnus crispa ssp. laciniata, Alnus crispa ssp. sinuata, Alnus sinuata, Alnus sitchensis, Alnus viridis ssp. fruticosa, Alnus viridis var. sinuata, Duschekia sinuata

Note: This taxon is recognized as Alnus alnobetula ssp. sinuata in Oregon (2022).

Male catkins of Green Alder, Mountain Alder, Siberian Alder, Sitka Alder, Wavy-leaf Alder: Alnus viridis ssp. sinuata (Synonyms: Alnus alnobetula, Alnus crispa ssp. laciniata, Alnus crispa ssp. sinuata, Alnus sinuata, Alnus sitchensis, Alnus viridis ssp. fruticosa, Alnus viridis var. sinuata, Duschekia sinuata) - Note: This taxon is recognized as Alnus alnobetula ssp. sinuata in Oregon (2022).

Elongated, pendant male catkins and newly emerging leaves of sitka alder as seen at Saddle Mt. State Park in the northern Coast Range of Oregon.......May 21, 2009.

Green Alder, Mountain Alder, Siberian Alder, Sitka Alder, Wavy-leaf Alder: Alnus viridis ssp. sinuata (Synonyms: Alnus alnobetula, Alnus crispa ssp. laciniata, Alnus crispa ssp. sinuata, Alnus sinuata, Alnus sitchensis, Alnus viridis ssp. fruticosa, Alnus viridis var. sinuata, Duschekia sinuata) - Note: This taxon is recognized as Alnus alnobetula ssp. sinuata in Oregon (2022).

Conelike female catkins and doubley serrate leaves of sitka alder as seen at Saddle Mt. State Park in the northern Coast Range of Oregon........June 14, 2009.
Paul Slichter