Verrucaria floerkeana Dalla Torre & Sarnth.

Lichenised. Poorly known taxon.
Substrate: siliceous rocks, calciferous rocks
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: on more or less calciferous rocks, especially on pebbles and small stones in rather sheltered situations. A rather difficult taxon, very similar to V. dolosa and often confused with that species.
Austria: Tirol; Salzburg; Kärnten; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Burgenland; France: Isère; Italy: Trentino Alto Adige;