[Alders East of the Cascade Mountains of Oregon and Washington]

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

Leaf of 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 - Seed "cones" of 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

Leaf and seed cones of a Sitka alder (former variety crispa) as seen on Wedge Mt., Wenatchee National Forest...................June 8, 2009. Note the wavy leaf margins as well as the many minute teeth (of irregular size) along the margin. The cone is really a female catkin.

Flowering male catkins of 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 - Male flowering catkin and emerging leaves of 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 - Flowering male catkins and emerging leaves of 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

Leaves and flowering male catkins of 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 - 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

Sitka alder (former variety sinuata) as seen along Pine Creek Road just uphill from the bridge across Pine Creek, Grant County, Oregon...................June 3, 2011. Note the male catkins are blooming at the time the leaves are emerging, a characteristic of this species..

Paul Slichter