[Wikipedia] Range, Description: Streptanthus brachiatus is a species of flowering plant in the mustard family known by the common name Socrates Mine jewelflower.[2] It is endemic to the Inner North Coast Ranges of California north of the San Francisco Bay Area. It can be found in chaparral and woodland habitat, often on serpentine soils, in Sonoma, Lake, and Napa Counties.[3] The fruit is a thin, narrow silique which may be up to 6 centimeters in length. (link added by Mary Ann Machi)