References from the California Lichen Catalog
- ESSLINGER, T. L. 1977a.
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A chemosystematic revision of the brown Parmeliae.
Journal of the Hattori Botanical Laboratory 42: 1–211.
- 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. 1882.
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A synopsis of the North American Lichens.
Pt. 1, Boston.
Complete references section