Threatened by development, horticultural collecting, and feral goats. See American Journal of Science II 14:338 (1852) for original description, and Contributions from the U.S. National Herbarium 12:474 (1909) for revised nomenclature.
California Counties and Islands:name (code) Los Angeles (LAX), San Clemente Island (SCM), Santa Catalina Island (SCT), San Diego (SDG)
Quads:name (DWR code) USGS code Otay Mesa (010C) 32116E8, National City (011A) 32117F1, Point Loma (011B) 32117F2, Imperial Beach (011D) 32117E1, Del Mar (022B) 32117H2, San Clemente Island Central (SCMC) 32118G4, San Clemente Island North (SCMN) 32118H5, San Clemente Island South (SCMS) 32118G3, Santa Catalina North (SCTN) 33118D4, Santa Catalina South (SCTS) 33118C4, Santa Catalina West (SCTW) 33118D5
Notes:
Definitions of codes preceding a county and/or quad:
*
Presumed extirpated
?
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.
California Native Plant Society (CNPS).
Inventory of Rare and Endangered Plants (online edition, v8-01a).
California Native Plant Society. Sacramento, CA. Accessed on
.
32116E8=Otay Mesa (010C) 32116E8,32117F1=National City (011A) 32117F1,32117F2=Point Loma (011B) 32117F2,32117E1=Imperial Beach (011D) 32117E1,32117H2=Del Mar (022B) 32117H2,32118G4=San Clemente Island Central (SCMC) 32118G4,32118H5=San Clemente Island North (SCMN) 32118H5,32118G3=San Clemente Island South (SCMS) 32118G3,33118D4=Santa Catalina North (SCTN) 33118D4,33118C4=Santa Catalina South (SCTS) 33118C4,33118D5=Santa Catalina West (SCTW) 33118D5
Presumed Extant
Presumed Extirpated or Unknown