Lecidea commaculans Nyl.

Syn.: Lecidea intercalanda Arnold
Lichenised.
Substrate: siliceous rocks
Altitudinal range: from the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron) 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: an arctic-alpine species of humid siliceous rocks near and above treeline; probably more widespread in the Alps.
Austria: ?Vorarlberg; Salzburg; Italy: Trentino Alto Adige; Piemonte;