Gray Alder, Mountain Alder, Thinleaf Alder
Alnus incana ssp. tenuifolia
Synonyms: Alnus incana var. occidentalis, Alnus rugosa, Alnus tenuifolia
Male and female catkins as seen along the Klickitat Trail between the Fisher Hill Bridge and milepost 2.5, Klickitat County, WA.......February 7, 2015.
The photo above shows a close-up view of the upper leaf surface of mountain alder from the shoreline of the Deschutes River in the eastern Columbia River Gorge.........Spetember 29, 2007.
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Close-up views of the lower leaf surface of mountain alder as seen from the shoreline of the Deschutes River in the eastern Columbia River Gorge..........Spetember 29, 2007.
The photo above shows a close-up view of a leaf bud of mountain alder as seen from the shoreline of the Deschutes River in the eastern Columbia River Gorge.........Spetember 29, 2007.
Another close-up view of the male and female catkins of mountain alder as seen from the shoreline of the Deschutes River in the eastern Columbia River Gorge..........January 24, 2016.
Paul Slichter