Photo: Camissonia boothii.

Flowering plant. Bow Willow, CA, US. Wild. 1998-03-01.
Camissonia boothii (Dougl. ex Lehm.) Raven Engl.: Booth's evening primrose, Booth's suncup, bottle cleaner, bottle washer, woody bottlewasher
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Photo: Camissonia boothii.