Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a mainly Mediterranean (-montane) lichen found on soil derived from metamorphic, base-rich rocks in dry grasslands, morphologically and anatomically similar to P. lachneum, but with a different ecology and distribution; from the Alps there is a single record (Switzerland).
