References from the California Lichen Catalog

FINK, B. 1935.

The lichen flora of the United States. Ann Arbor.

HERRE, A. W. C. T. 1910.

The lichen flora of the Santa Cruz peninsula, California. Proceedings of the Washington Academy of Sciences 12(2): 27–269.

VOLK, S. L. 1963.

Crustose lichen flora of Marin County, California. M. A. thesis, San Francisco State College, San Francisco.