References from the California Lichen Catalog

PRINTZEN, C. 2001.

Corticolous and lignicolous species of Lecanora (Lecanoraceae, Lecanorales) with usnic or isousnic acid in the Sonoran Desert region. The Bryologist 104: 382–409.

RYAN, B. D., H. T. LUMBSCH, M. I. MESSUTI, C. PRINTZEN, L. SLIWA, & T. H. NASH III. 2004.

Lecanora, pp. 176–286, in T. H. Nash III, B. D. Ryan, P. Diederich, C. Gries, & F. Bungartz (eds.), Lichen flora of the Greater Sonoran Desert region, Vol. 2. Lichens Unlimited, Arizona State University, Tempe.