Known from only two natural occurrences in Black Lake Cyn. And at Oso Flaco Lk. Threatened by vehicles, development, erosion, hydrological alterations, and non-native plants. Individuals re-introduced in Black Lake Cyn. in 1995. Introduced population in Los Osos well established as of 2003. Experimental introduction also underway in Nipomo as of 2004. Collection from Mexico needs confirmation. See Proceedings of the California Academy of Natural Sciences 3:61 (1863) for original description.
California Counties and Islands:name (code) Los Angeles (LAX), San Bernardino (SBD) *, Santa Cruz (SCR) *, San Francisco (SFO) *, San Luis Obispo (SLO)
Quads:name (DWR code) USGS code San Bernardino South (107D)* 34117A3, Hollywood (111D) 34118A3, Pismo Beach (221B) 35120B6, Oceano (221D) 35120A5, Morro Bay South (247D) 35120C7, Santa Cruz (387E) 36122H1, Felton (408D)* 37122A1, San Francisco North (466C)* 37122G4
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.
34117A3=San Bernardino South (107D)* 34117A3;34118A3=Hollywood (111D) 34118A3;35120B6=Pismo Beach (221B) 35120B6;35120A5=Oceano (221D) 35120A5;35120C7=Morro Bay South (247D) 35120C7;36122H1=Santa Cruz (387E) 36122H1;37122A1=Felton (408D)* 37122A1;37122G4=San Francisco North (466C)* 37122G4