Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a species with an epilithic, grey-brown, rimose to areolate thallus, entirely immersed ascomata with a conspicuous adpressed involucrellum reaching down to the base of the perithecium, and ellipsoid ascospores (to c. 25 µm long); on more or less calcareous rocks; only known from the type locality in the Western Alps (France).
