Psora rubiformis (Ach.) Hook.

Syn.: Baeomyces rubiformis Ach., Lecidea rubiformis (Ach.) Wahlenb.
Lichenised.
Substrate: calciferous rocks, intermediate rocks (such as calciferous schists), calciferous soil
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 found on loess and calciferous soil, in fissures of calciferous siliceous rocks (e.g. calciferous schists); chemically heterogeneous (with and without gyrophoric acid).
Austria: Tirol; Salzburg; Kärnten; Niederösterreich (incl. Wien); France: Haute-Alpes; Alpes-Maritimes; Italy: Lombardia; Piemonte; Valle d'Aosta;