Judy and Ron Robertson were outstanding amateur lichenologists in California. Their huge lichen collection (over 8,500 collections) was donated to the University of California Herbarium after their deaths. This article describes 36 unusual lichens that they collected in California, together with their provenance, many of them extremely rare or new to the California flora.
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Evansia
Vol. 34 • No. 3
September 2017
Vol. 34 • No. 3
September 2017
California
Lichens
Robertson
UC Herbarium