Verrucaria asperula Servít

Lichenised. Poorly known taxon.
Substrate: calciferous 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: a species described from Germany and also reported from relatively warm sites in the Austrian, French and Italian Alps.
Austria: Steiermark; Oberösterreich; France: Savoie;