References from the California Lichen Catalog
- FINK, B. 1935.
-
The lichen flora of the United States.
Ann Arbor.
- HASSE, H. E. 1898a.
-
Lichens of Southern California.
Los Angeles.
- HASSE, H. E. 1913b.
-
The lichen flora of southern California.
Contributions from the United States National Herbarium 17: 1–132.
- TUCKERMAN, E. 1872.
-
Genera Lichenum. An arrangement of the North American lichens.
Edwin Nelson, Amherst. 281 pp. + index.
- ZAHLBRUCKNER, A. 1902.
-
Diagnosen neuer und genügend beschriebener kalifornischer Flechten.
Beihefte zum Botanischen Zentralblatt 13: 149–163.
Complete references section