References from the California Lichen Catalog
- HASSE, H. E. 1895.
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Lichens of the vicinity of Los Angeles I.
Erythea 3: 41–44.
- HASSE, H. E. 1913a.
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Additions to the lichen flora of southern California. No. 8.
The Bryologist 16: 1–2.
- HASSE, H. E. 1913b.
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The lichen flora of southern California.
Contributions from the United States National Herbarium 17: 1–132.
- HERTEL, H. 1988.
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Lecideaceae Exsiccatae ausgegeben von der Botanischen Staatsammlung München. Fasc. X (No. 181–200).
June 1988. 8 pp.
- ORCUTT, C. R. 1909.
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Botany of southern California. Lichens.
American Plants, 2: 400–401.
- TUCKER, S. C., & W. P. JORDAN. 1979 (1978).
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A catalog of California lichens.
Wasmann Journal of Biology 36: 1–105.
- TUCKERMAN, E. 1872.
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Genera Lichenum. An arrangement of the North American lichens.
Edwin Nelson, Amherst. 281 pp. + index.
- TUCKERMAN, E. 1882.
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A synopsis of the North American Lichens.
Pt. 1, Boston.
- WILLEY, H. 1873a.
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A list of North American lichens arranged according to Professor E. Tuckerman's “Genera Lichenum”.
New Bedford.
Complete references section