References from the California Lichen Catalog

AHTI, T., & S. HAMMER. 2002.

Cladonia, pp. 131–158, in T. H. Nash III, B. D. Ryan, C. Gries, & F. Bungartz (eds.), Lichen flora of the Greater Sonoran Desert region, Vol. 1. Lichens Unlimited, Arizona State University, Tempe.

BALTZO, D. E. 2002 (2001).

San Francisco Watershed lichens — a more comprehensive list. Bulletin of the California Lichen Society 8: 44–56.