Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a species with an effuse, minutely granulose, black thallus turning brown-black to purplish black in the wet state, the highly convex to verruciform granules (0.05-0.1 mm in diam.) densely packed to dispersed, apothecia arising singly at the top of the thalline granules, difficult to discern from the outside, closed, the hymenium only c. 25 μm high, with 8-spored asci, and oblong to ellipsoid, hyaline, simple ascospores (7-9 × 4-5 μm); on periodically submerged rocks (limestone?); ecological requirements similar to those of Gonohymenia heppii with which it may occur together; only known from the type locality in the Western Alps (Switzerland).
