References from the California Lichen Catalog
- TUCKER, S. C. 2002 (2001).
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New reports or divergences in range for lichens of California, based on Lichens of North America by I. Brodo, S. D. Sharnoff, and S. Sharnoff, 2001.
Bulletin of the California Lichen Society 8: 59–71.
Complete references section