Known only from small fragmented populations within and adjacent to Ft. Irwin (DOD); where threatened by mining, vehicles, and military activities. Also threatened by prolonged drought. See Leaflets of Western Botany 3:49-80 (1941) for original description.
California Counties and Islands:name (code) San Bernardino (SBD)
Quads:name (DWR code) USGS code Paradise Range (206A) 35116B7, Williams Well (206B) 35116B8, Lane Mountain (206C) 35116A8, Mud Hills (207D) 35117A1, Goldstone (231C) 35116C8, East of Goldstone (231D) 35116C7
Definitions of codes preceding a county and/or quad:
Uncertain about distribution or identity
Uncertain about distribution, but presumed extirpated if once present
Occurrence confirmed, but possibly extirpated
Species may be present in other areas where conditions are favorable.