Acarospora tenuicorticata H. Magn.

Lichenised. Poorly known taxon.
Substrate: 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 subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: in the study area only reported from a few localities in the Eastern Alps (Austria).
Austria: Salzburg; Steiermark;