Redwood Sorrel, a native plant , has been added to the USWildflowers’ database (11/30/2019.) Scientific name is Oxalis oregana. Photo below was taken in Prairie Creek Redwoods State Park, Humboldt County, CA on Sep 12, 2019. Go to the Redwood Sorrel detail page for more information and photos.

Redwood Sorrel – Oxalis oregana