Opegrapha vulgata (Ach.) Ach.

Syn.: Hysterina vulgata (Ach.) Gray, Lichen vulgatus Ach., Opegrapha cinerea Chevall., Opegrapha devulgata Nyl.
Lichenised.
Substrate: bark, lignum
Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a widespread, but not common temperate species with optimum in humid forests, especially on Abies, but also on broad-leaved trees.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Germany: Oberbayern; Switzerland: Bern; Glarus; Graubünden; St. Gallen; Schwyz; Uri; Unterwalden; Vaud; Valais; France: Alpes-de-Haute-Provence; Alpes-Maritimes; Isère; Haute-Savoie; Vaucluse; Var; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte; Slovenia: Alpine and Pre-Alpine Slovenia; Trnovsky Gozd;