References from the California Lichen Catalog
- HAMMER, S. 1995.
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A synopsis of the genus Cladonia in the northwestern United States.
The Bryologist 98: 1–28.
- 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