References from the California Lichen Catalog

GOWARD, T. 1999.

The Lichens of British Columbia. Part 2. Fruticose species. Special Report ser. 9. British Columbia Ministry of Forests, Crown Publications Inc., Victoria, B. C., Canada.

HERRE, A. W. C. T. 1912a.

New or rare California lichens. The Bryologist 15: 81–87.

TIBELL, L. 1980.

The lichen genus Chaenotheca in the northern hemisphere. Symbolae Botanicae Upsalienses 23: 1–65.

TIBELL, L., & B. D. RYAN. 2004.

Calicium, pp. 39–44; Chaenotheca, pp. 57–61; Chaenothecopsis, pp. 639–641; Cyphelium, pp. 82–88; Microcalicium, pp. 669–673; Phaeocalicium, pp. 399–401; Sphaerophorus, pp. 507–508; Stenocybe, pp. 511–513; Texosporium, pp. 532–533; Thelomma, pp. 533–536, 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.