References from the California Lichen Catalog

HASSE, H. E. 1903a.

Contributions to the lichen flora of the California coast islands. Bulletin of the Southern California Academy of Sciences 2: 23–26.

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.