Psoronactis dilleniana (Ach.) Ertz & Tehler

Syn.: Lecanactis dilleniana (Ach.) Körb., Lichen dillenianus Ach.
Lichenised.
Substrate: siliceous rocks
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)
Note: on hard crystalline rocks beneath underhangs and in crevices which are seldom wetted by rain, mostly in upland areas.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Niederösterreich (incl. Wien); Switzerland: Valais; France: Isère; Italy: Trentino Alto Adige; Piemonte;