References from the California Lichen Catalog

HASSE, H. E. 1903f.

Additions to the lichen flora of southern California, Part III. Bulletin of the Southern California Academy of Sciences 2: 71–73.

HASSE, H. E. 1906.

Contributions to the lichen flora of southern California. Bulletin of the Southern California Academy of Sciences 5: 38–45.

HERRE, A. W. C. T. 1942c.

Additions to and comments upon the lichen flora of the Santa Cruz Peninsula, California. American Midland Naturalist 28: 752–755.

MERRILL, G. K. 1923.

Lichens. Pp. 358–377, in C. F. Millspaugh and L. W. Nuttall (eds.), Flora of Santa Catalina Island, California. Publications of the Field Museum of Natural History, Botanical Series, vol. 5.

WILLEY, H. 1890.

A synopsis of the genus Arthonia. New Bedford.