A review of the Rességuier herbarium (Lichens of the Rhön), supplemented by findings from the Rhön by V. Wirth, resulted in a list of 33 taxa of lichenicolous fungi. Among these, Sclerococcum australe is new to Germany; Endococcus rugulosus, Roselliniopsis tartaricola and Stigmidium eucline are new to Hesse and several species are new to the Rhön. Two undescribed species of the genera Crittendenia and Endococcus are sketched. The nomenclatural story of Bryostigma lapidicola and related misunderstandings are discussed. Key words: Germany, Bavaria, Hesse, Ascomycota, Basidiomycota.