Polyblastia clandestina (Arnold) Jatta
Syn.: Sporodictyon clandestinum Arnold
Lichenised.
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 alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)
Note: on calcareous rocks in sheltered situations; apparently restricted to the Alps, where it is probably more widespread.
Austria: Tirol; Oberösterreich; France: Haute-Savoie; Italy: Veneto; Trentino Alto Adige; Slovenia: Alpine and Pre-Alpine Slovenia;
