In the Gurktaler Alpen, a mountain area in central Austria, at many localities the diversity of lichenized fungi has been investigated. All together 776 taxa of lichenized fungi, 73 species of lichenicolous fungi and 3 non-lichenized corticolous micromycetes are reported from the study area. Dacampia rufescentis is recorded for the first time in the Alps (Austria, Styria). Opegrapha trifurcata is recognized as independant species beside Opegrapha calcarea. Carbonea atronivea, Miriquidica instrata and Opegrapha trifurcata represent further new records for Styria. The previously reported Arthonia stellaris and Opegrapha herbarum have to be deleted from the flora of Carinthia for the time being as the revision of the corresponding specimens has shown that they belong to other taxa. Key words: Biodiversity, flora of Austria, lichens, lichenicolous fungi.