References from the California Lichen Catalog
- HASSE, H. E. 1905.
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A few lichens picked up on San Jacinto Mountain.
Bulletin of the Southern California Academy of Sciences 4: 123–125.
- HASSE, H. E. 1908a.
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Additions to the lichen flora of southern California.
The Bryologist 11: 6–7.
- ORCUTT, C. R. 1903.
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Southern California lichens.
The West American Scientist 14(3): 17–22; 14(4): 25–28.
- ORCUTT, C. R. 1907.
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Botany of southern California. Lichens.
American Plants, 1: 240–245, 367–372.
Complete references section