Angeles NF has adopted species management guidelines. Threatened by powerline construction and recreational activities. Possibly threatened by road maintenance. See Erythea 2:124 (1894) for original description, and Flora of California 4(2):47 (1979) by L. Dempster for taxonomic treatment.
California Native Plant Society (CNPS).
Inventory of Rare and Endangered Plants (online edition, v8-01a).
California Native Plant Society. Sacramento, CA. Accessed on
.