[Wikipedia] Rarity, Distribution: It is a vulnerable species on the California Native Plant Society Inventory of Rare and Endangered Plants. Distribution It is primarily native to the Mojave Desert including its Antelope Valley region, and also has populations in the Kern River Valley and adjacent southern Sierra Nevada, Amargosa Desert, Owens Valley, Yosemite Valley, and eastern Transverse Ranges. This is a plant of alkaline soils, usually in wetland-riparian areas, in Shadscale scrub and chaparral habitats. (link added by Mary Ann Machi)