Acarospora badiofusca (Nyl.) Th. Fr. subsp. badiorubra Clauzade & Cl. Roux

Lichenised.
Substrate: siliceous 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: non-calcicolous, and more thermophilous than the typical subspecies; certainly more widespread in the Alps.
Austria: Tirol; Kärnten; Steiermark; France: Alpes-de-Haute-Provence; Haute-Alpes; Italy: Friuli; Valle d'Aosta;