Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a species with a greyish to greyish-brown, indistinctly areolate thallus forming small patches among other lichens, and soralia with external soredia becoming brown, containing gyrophoric acid (thallus resembling that of Rimularia fuscosora, which however contains norstictic acid), apothecia fairly common, black with concolorous margins and with a green, partly violet epihymenium, the cylindrical asci containing broadly ellipsoid to subglobose, halonate ascospores; on bark of deciduous trees in humid lowland sites; widespread in the Holarctic region including Macaronesia, in Europe most common in the Northwest; reported from the Eastern Alps only (Austria), but perhaps still overlooked elsewhere.
