References from the California Lichen Catalog

BALTZO, D. E. 2002 (2001).

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

HILL, B. 1997.

CALS Wantrup Preserve field trip. Bulletin of the California Lichen Society 4: 15–16.

McGEE, M. 1998.

San Francisco Watershed field trip, 31 January, 1998. Bulletin of the California Lichen Society 5: 16–18.

SIGAL, L. L. 1975.

Lichens and mosses of California serpentine. M. A. thesis, San Francisco State University, San Francisco.

SIGAL, L. L. 1989.

The lichens of serpentine rocks and soils in California. Mycotaxon 34: 221–238.

TUCKER, S. C., & W. P. JORDAN. 1979 (1978).

A catalog of California lichens. Wasmann Journal of Biology 36: 1–105.

WETMORE, C. M. 2003.

The Caloplaca squamosa group in North and Central North America. The Bryologist 106: 147–156.