Verrucaria banatica Servít

Lichenised.
Substrate: calciferous rocks
Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a calcicolous species with a thin, rimose, brownish-grey thallus, hemispherically protruding ascomata (to c. 0.4 mm in diam.) with an adpressed involucrellum reaching down half of the the perithecium, and ellipsoid to oblong ascospores (to c. 25 µm long); in the study area only known from the Eastern Alps (Austria).
Austria: Vorarlberg; Steiermark; Oberösterreich; Niederösterreich (incl. Wien);