Acarospora rugulosa Körb.

Lichenised.
Substrate: siliceous rocks, metal-rich siliceous rocks
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: closely related to A. peliscypha.
Austria: Tirol; Salzburg; Kärnten; France: Alpes-de-Haute-Provence; Alpes-Maritimes;