Arthonia cinereopruinosa Schaer.

Syn.: Arthonia lilacina (Ach.) Körb., Arthonia pinicola (Hepp) A. Massal., Pyrenotheca stictica Fr., Trachylia cinereopruinosa (Schaer.) A. Massal.
Lichenised.
Substrate: bark
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a mild-temperate species found on smooth bark of deciduous trees in dense humid forests.
Austria: Oberösterreich; Niederösterreich (incl. Wien); Germany: Oberbayern; Switzerland: Bern; Luzern; Vaud; France: Vaucluse; Italy: Friuli; Veneto; Lombardia;