The sorediate, saxicolous species of the Lecanora subfusca group in Europe

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.