References from the California Lichen Catalog
- BOWLER, P. A., W. A. WEBER, & R. E. RIEFNER JR. 1996.
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A checklist of the lichens of San Clemente Island, California.
Bulletin of the California Lichen Society 3(2): 1–8.
- NOBLE, W. J. 1980.
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Catillaria columbiana comb. nov. from western North America.
The Bryologist 83: 71–72.
- NOBLE, W. J. 1982.
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The lichen flora of the coastal Douglas-fir dry subzone of British Columbia, 1982, Reprinted by B. McCune, 1987.
Complete references section