Altitudinal distribution: alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)
Note: a silicicolous species with a rather thin, brownish black thallus of 0.2-0,3 mm wide, flat areolae forming irregular patches (2-3 cm in diam.), without a visible hypothallus, black subglobose perithecia which are isolated on in groups of 2-3, the apex subumbilicate near the ostiole, the wall black throughout, a I+ red hymenium, 8-spored asci, and ellipsoid to oblong-ellipsoid, simple, hyaline ascospores measuring 15-18 × 8-9 μm; only known from the type locality at 2,400 m in Valle d’Aosta (Italy).
