Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a species with an endosubstratic thallus and densely grouped apothecia with pale discs which are usually covered by a whitish-grey pruina, the epihymenial granules insoluble in K and N, based on type from SW USA; on bark and wood (Juniperus, Quercus), with a single record from the montane belt of the Western Alps (France).
