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 poorly known species with a spreading, areolate, lead-grey thallus reacting K-, immersed apothecia, usually several per areole, with black discs, hymenium c. 100 μm high, paraphyses moniliform in the upper part, 8-spored asci, broadly ellipsoid ascospores (16-21 × 10-12 μm), and filiform, arcuate conidia; on calcareous rocks in the alpine belt; only known from the type locality in the Western Alps (Switzerland).
