References from the California Lichen Catalog

HASSE, H. E. 1913b.

The lichen flora of southern California. Contributions from the United States National Herbarium 17: 1–132.

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.

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

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