References from the California Lichen Catalog
- BALTZO, D. E. 1989.
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Lichens of Mount Diablo State Park, Contra Costa County, California.
Mycotaxon 34: 37–46.
- BRATT, C. C. 1997.
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Lichens of Cabrillo National Monument, Point Loma, San Diego.
Bulletin of the California Lichen Society 4: 1–3.
- BREUSS, O. 1996.
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Eine verfeinertes Gliederungskonzept für Catapyrenium (lichenisierte Ascomyceten, Verrucariaceae) mit einem Schlüssel für die bisher bekannten Arten.
Annalen des Naturhistorischen Museums in Wien 98B, Suppl.: 35–50.
- DOELL, J., & D. WRIGHT. 1996.
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Macrolichens of Jasper Ridge Biological Preserve, San Mateo County, California.
Bulletin of the California Lichen Society 3(1): 1–8.
- THOMSON, J. W. 1987.
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The lichen genera Catapyrenium and Placidiopsis in North America.
The Bryologist 90: 27–39.
- WEBER, W. A., C. BRATT, & J. LARSON. 1987.
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Lichens and bryophytes of the Santa Rosa Plateau Nature Conservancy Reserve, Riverside County, California.
Evansia 4: 21–25.
Complete references section