[The Oxalis Family West of the Cascade Mountains of Oregon and Washington]

Western Wood Sorrel, Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass

Oxalis oregana

Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii

Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass: Oxalis oregana

Redwood sorrel (the former Oxalis oregana var. smallii) as seen at the author's garden in Gresham, OR..........May 3, 2005. This variety of wood sorrel makes an attractive ground cover for the woodland garden to the west of the Cascade Mts.

Flower of Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii) - Flower of Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii)

Close-ups of the flowers of Oregon wood sorrel as seen in forest at the base of Saddle Mountain in the Coast Range of northwestern Oregon..........May 21, 2009.

Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii) - Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii)

Oregon wood sorrel beginning to bloom (left) along the Saddle Mountain Trail in the Coast Range of northwestern Oregon........May 2, 2016. The photo at right shows Oregon wood sorrel along the Cape Arago Trail at Shore Acres State Park.........April 19, 2016.

Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii) -- Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii)

Close-ups of the flower and "shamrock" leaf and flower of western wood sorrel as seen in the author's garden in Gresham, OR..........May 5, 2009.


Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii) - Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii)

Western wood sorrel as seen along the Neahkanie Mountain South Trail in northwestern Tillamook County, OR.........April 6, 2016.

Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii) - Flower of Oregon Wood Sorrel, Redwood Sorrel, Redwood-sorrel, Sour Grass: Oxalis oregana (Synonyms: Oxalis oregana var. oregana, Oxalis oregana var. smallii)

Western wood sorrel as seen at left in the webmaster's garden in Gresham, OR.........March 27, 2017. The photo at right shows western wood-sorrel bloomin in the webmaster's woodland garden in Gresham, OR.........March 29, 2018.

Paul Slichter