References from the California Lichen Catalog
- HALE, M. E. 1979.
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How to Know the lichens. Second Edition. W. C.
Brown Co., Publ., Dubuque.
- SMITH, D. W. 1980.
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A taxonomic survey of the macrolichens of Sequoia and Kings Canyon National Parks.
M. A. thesis, San Francisco State University, San Francisco. (Not seen; information based on summary by Wetmore, 1983.)
Complete references section