References from the California Lichen Catalog
- FINK, B. 1935.
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The lichen flora of the United States.
Ann Arbor.
- GOWARD, T. 1999.
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The Lichens of British Columbia. Part 2. Fruticose species. Special Report ser. 9.
British Columbia Ministry of Forests, Crown Publications Inc., Victoria, B. C., Canada.
- HERRE, A. W. C. T. 1942a.
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Lichens from Mount Shasta, California.
The Bryologist 45: 43–45.
- THOMSON, J. W. 1984.
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American Arctic lichens. 1. The macrolichens. Columbia University Press, New York.
Pp. 1–504.
- TUCKER, S. C., & W. P. JORDAN. 1979 (1978).
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A catalog of California lichens.
Wasmann Journal of Biology 36: 1–105.
Complete references section