Opegrapha lithyrga Ach.
Syn.: Opegrapha lithyrgodes Nyl.
Lichenised.
Substrate: siliceous rocks
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: on vertical to underhanging surfaces of hard siliceous rocks in deep gorges or in mature forests. Closely related to O. vulgata.
Austria: ?Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Niederösterreich (incl. Wien); Burgenland; Switzerland: Schwyz; Uri; Vaud; Italy: Trentino Alto Adige; Lombardia; Piemonte; Liguria;
