Placocarpus schaereri (Fr.) Breuss

Syn.: Catapyrenium schaereri (Fr.) R. Sant., Dermatocarpon monstrosum (Schaer.) Vain., Dermatocarpon saxorum (Chaillet) Trevis., Endocarpon miniatum (L.) P. Gaertn., G. Mey. & Scherb. var. monstrosum Schaer., Endocarpon monstrosum (Schaer.) A. Massal., Endopyrenium monstrosum (Schaer.) Hazsl., Parmelia schaereri Fr., Placidium monstrosum (Schaer.) A. Massal., Verrucaria schaereri (Fr.) Nyl.
Lichenised.
Substrate: , calciferous rocks
Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: a Mediterranean to mild-temperate lichen found on exposed calcareous boulders, with optimum in the submediterranean belt; when young, it is a constant parasite on Protoparmeliopsis versicolor.
Austria: Kärnten; Steiermark; Niederösterreich (incl. Wien); Switzerland: Valais; France: Alpes-de-Haute-Provence; Haute-Alpes; Alpes-Maritimes; Drôme; Isère; Savoie; Haute-Savoie; Vaucluse; Var; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta; Liguria;