References from the California Lichen Catalog
- HASSE, H. E. 1898a.
-
Lichens of Southern California.
Los Angeles.
- ORCUTT, C. R. 1903.
-
Southern California lichens.
The West American Scientist 14(3): 17–22; 14(4): 25–28.
- ORCUTT, C. R. 1907.
-
Botany of southern California. Lichens.
American Plants, 1: 240–245, 367–372.
Complete references section