References from the California Lichen Catalog

GRUBE, M., & B. D. RYAN. 2002.

Collemopsidium, pp. 162–164, 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.