NatureServe Conservation Status
Rounded Global Status Rank: G1 - Critically Imperiled
Reasons: Endemic to San Gabriel Mountains of Los Angeles County, California. About 5 populations are known to be extant. A few historic populations have been destroyed by mining. Collecting and recreational use are ongoing threats. Formal protection is needed for all known sites.
Environmental Specificity: Very narrow. Specialist or community with key requirements scarce.
Comments: Only known from steep granite canyon walls in the San Gabriel Mts, California.