Ochrolechia tartarea (L.) A. Massal.

Syn.: Lecanora tartarea (L.) Ach., Lichen tartareus L., Ochrolechia androgyna (Hoffm.) Arnold var. saxorum (Oeder) Verseghy non auct., Parmelia tartarea (L.) Ach., Pertusaria gyrocheila Nyl.
Lichenised.
Substrate: siliceous rocks, living mosses
Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) 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 siliceous rocks and on thin soil layers in humid situations, mostly in upland areas. In the past the species was frequently confused with other taxa.
Austria: Vorarlberg; Tirol; Salzburg; ?Kärnten; ?Steiermark; Switzerland: Bern; Graubünden; Vaud; Valais; France: Alpes-Maritimes; Isère; Savoie; Haute-Savoie; Italy: Veneto; Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta; Liguria;