Abstract:

The anatomy and chemistry ofLecanora vacillansH. Magn. has been studied. This saxicolous species combines key characters of both theL. subfuscaandL. subcarneagroups and indicates that the representative groups should not be segregated at generic level. More particularlyL. vacillansresembles theL. subfuscagroup in its apothecial anatomy but contains chemical substances typical of theL. subcarneagroup, whereas the morphology is reminiscent of both groups.Lecanora vacillansf.infuscatais reduced to synonymy withL. vacillans.