Camissonia boothii (Dougl. ex Lehm.) Raven.
Engl.: Booth's evening primrose, Booth's suncup, bottle cleaner, bottle washer, woody bottlewasher.
Henriette's Herbal Homepage
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Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.