[wikipedia] Range, Habitat, Limited Distribution: It is endemic to California, where it is known from the California Coast Ranges of the Central Coast and the San Francisco Bay Area.[1] It grows below 1,200 metres (3,900 ft) in chaparral, coastal prairie, coastal sage scrub, closed-cone pine forest, grassland, and oak woodland habitats.[1] It is California Department of Fish and Wildlife and IUCN listed Vulnerable species, and is on the California Native Plant Society Inventory of Rare and Endangered Plants.[2] Its current range is uncertain because many known occurrences of the plant have been extirpated.[2] (link added by Mary Ann Machi)