References from the California Lichen Catalog
- TUCKER, S. C., & W. P. JORDAN. 1979 (1978).
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A catalog of California lichens.
Wasmann Journal of Biology 36: 1–105.
- WEBER, W. A. 1967b.
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A synopsis of the North American species of Cyphelium.
The Bryologist 70: 197–203.
Complete references section