[Wood-sorrels: The Genus Oxalis in the Columbia River Gorge of Oregon and Washington]
Oregon Wood Sorrel, Oregon Wood-sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass, Western Wood-sorrel
Oxalis oregana
Synonyms: Oxalis acetosella ssp. oregana, Oxalis oregana var. oregana, Oxalis oregana var. smallii
![Oregon Wood Sorrel, Oregon Wood-sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass, Western Wood-sorrel: Oxalis oregana (Synonyms: Oxalis acetosella ssp. oregana, Oxalis oregana var. oregana, Oxalis oregana var. smallii)](oregana/oregana3a.jpg)
Oregon wood sorrel as seen along the Latourell Falls Loop Trail, Guy W. Talbot State Park, Columbia River Gorge..........April 11, 2014.
![Trifoliate leaf of Oregon Wood Sorrel, Oregon Wood-sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass, Western Wood-sorrel: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii)](oregana/oxalislf.jpg)
-- ![Oregon Wood Sorrel, Oregon Wood-sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass, Western Wood-sorrel: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii)](oregana/oregana2c.jpg)
Close-ups of the flowers and leaves of Oregon wood sorrel as seen along the Angels Rest Trail in the Columbia River Gorge........May 18, 2009.
-- ![Oregon Wood Sorrel, Oregon Wood-sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass, Western Wood-sorrel: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii)](oregana/oregana2d.jpg)
Close-ups of the flowers and leaves of Oregon wood sorrel as seen along the Angels Rest Trail in the Columbia River Gorge........May 18, 2009.
Paul Slichter