References from the California Lichen Catalog
- FINK, B. 1935.
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The lichen flora of the United States.
Ann Arbor.
- HASSE, H. E. 1898a.
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Lichens of Southern California.
Los Angeles.
- HASSE, H. E. 1913b.
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The lichen flora of southern California.
Contributions from the United States National Herbarium 17: 1–132.
- MERRILL, G. K. 1923.
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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.
- NYLANDER, W. 1900.
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Lichenes Ceylonenses et additamentum ad lichenes Japoniae.
Acta Societatis Scientarum Fennicae 26: 1–33.
- ORCUTT, C. R. 1909.
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Botany of southern California. Lichens.
American Plants, 2: 400–401.
Complete references section