Polyblastia amota Arnold

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 alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)
Note: on calciferous rocks in sheltered situations, mostly in upland areas; closely related to P. albida, from which it differs in the slightly larger spores (see Roux et coll. 2014: 899); not always distinguished from P. albida.
Austria: Vorarlberg; Tirol; Steiermark; France: Alpes-Maritimes; Savoie; Haute-Savoie; Vaucluse; Italy: Veneto; Trentino Alto Adige;