Abstract
The sorediate, saxicolous members of the Lecanora subfusca group, which include L. campestris ssp. dolomitica, L. caesiosora, L. pannonica, and L. umbrosa, although frequently misnamed, can be distinguished morphologically and chemically. Lecanora caesiosora is most variable, with a southerly form having a dark grey, thick thallus, and a more northerly, often shade‐loving, morphotype having a very pale, thin thallus. The species are described, and a diagnostic key is presented including some confusable species. Lecanora pannonica and L. neglecta are neotypified.
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