References from the California Lichen Catalog

IMSHAUG, H. A. 1957.

Alpine lichens of western United States and adjacent Canada. 1. The macrolichens. The Bryologist 60: 177–272.

SIGAL, L. L., & D. R. TOREN. 1974.

New distribution records of lichens in California. The Bryologist 77: 469–470.