Pyrenula laevigata (Pers.) Arnold

Syn.: Pyrenula alba A. Massal. var. laevigata (Pers.) Trevis., Pyrenula glabrata (Ach.) A. Massal., Verrucaria glabrata Ach., Verrucaria laevigata Pers.
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 temperate species of smooth bark, most frequent on Carpinus and Fagus in open, humid woodlands; widespread in the Alps, but not very common.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Germany: Oberbayern; Schwaben; Switzerland: Bern; Glarus; Graubünden; Schwyz; Unterwalden; France: Haute-Savoie; Italy: Friuli; Veneto; Lombardia; Slovenia: Alpine and Pre-Alpine Slovenia; Trnovsky Gozd;