References from the California Lichen Catalog
- FINK, B. 1935.
-
The lichen flora of the United States.
Ann Arbor.
- HERRE, A. W. C. T. 1906.
-
The foliaceous and fruticose lichens of the Santa Cruz peninsula, California.
Proceedings of the Washington Academy of Sciences 7: 325–396.
- HERRE, A. W. C. T. 1946.
-
The Parmelias of California.
Contributions from the Dudley Herbarium 3: 313–350.
Complete references section