[Wikipedia] Range, Habitat, Indicator Species: Lepidospartum squamatum is native to the mountains, valleys, and deserts of central and southern California, and Baja California. It grows in sandy, gravelly soils in a number of habitat types, especially dry alluvial habitat such as arroyos.[1] It is considered an indicator species for the alluvial scrub habitat type in this region.[1][2] It is also commonly found in neighboring Arizona (link added by Mary Ann Machi)