References from the California Lichen Catalog
- FINK, B. 1935.
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The lichen flora of the United States.
Ann Arbor.
- HARRIS, R. C. 1975.
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A taxonomic revision of the genus Arthopyrenia Massal. sensu lato (Ascomycetes) in North America.
Ph. D. dissertation, Michigan State University, East Lansing.
- HASSE, H. E. 1895.
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Lichens of the vicinity of Los Angeles I.
Erythea 3: 41–44.
- HASSE, H. E. 1906.
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Contributions to the lichen flora of southern California.
Bulletin of the Southern California Academy of Sciences 5: 38–45.
- HERRE, A. W. C. T. 1912b.
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Supplement to the lichen flora of the Santa Cruz peninsula, California.
Journal of the Washington Academy of Sciences 2: 380–386.
- McCLATCHIE, A. J. 1897.
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Seedless plants of southern California. Protophytes — Pteridophytes.
Proceedings of the Southern California Academy of Sciences 1: 363–370.
- NOBLE, W. J., T. AHTI, G. F. OTTO, & I. M. BRODO. 1987.
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A second checklist and bibliography of the lichens and allied fungi of British Columbia.
Syllogeus 61: 1–95.
- ORCUTT, C. R. 1907.
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Botany of southern California. Lichens.
American Plants, 1: 240–245, 367–372.
Complete references section