Known from fewer than twenty occurrences. Threatened by agriculture, development, vehicles, grazing and trampling. Official flower of SLO Co. See Bulletin of the California Academy of Sciences 1:184 (1885) for original description.
California Counties and Islands:name (code) San Luis Obispo (SLO)
Quads:name (DWR code) USGS code Santa Maria (195B) 34120H4, Caldwell Mesa (220A) 35120B3, Tar Spring Ridge (220B) 35120B4, Arroyo Grande NE (221A)* 35120B5, Pismo Beach (221B) 35120B6, Santa Margarita Lake (245C) 35120C4, Pozo Summit (245D) 35120C3, Lopez Mtn. (246D) 35120C5, Tierra Redonda Mountain (294C) 35120G8
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.