Arthopyrenia cerasi (Schrad.) A. Massal.

Syn.: Arthopyrenia crombei A.L. Sm., Metasphaeria cerasi (Schrad.) Vain., Pseudosagedia cerasi (Schrad.) Oxner, Pyrenula cerasi (Schrad.) Trevis., Spermatodium cerasi (Schrad.) Trevis., Verrucaria cerasi Schrad.
Non- or doubtfully lichenised.
Substrate: bark
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 temperate early coloniser of smooth bark, found especially in clearings of long-established deciduous woodlands near rivers, on young twigs of e.g. Fraxinus and Corylus; most probably non-lichenised.
Austria: Vorarlberg; Salzburg; Steiermark; Niederösterreich (incl. Wien); Germany: Oberbayern; Schwaben; Switzerland: Ticino; France: Drôme; Isère; Savoie; Haute-Savoie; Var; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte;