Opegrapha niveoatra (Borrer) J.R. Laundon

Syn.: Opegrapha amphotera Nyl., Opegrapha dubia auct., Opegrapha subsiderella (Nyl.) Arnold, Opegrapha vulgata (Ach.) Ach. var. subsiderella Nyl., Verrucaria niveoatra Borrer
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 mild-temperate lichen found on old trees in open woodlands; closely related to O. vulgata, but differing in the shorter spermogonia; widespread throughout the Alps, but generally not very common.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Germany: Oberbayern; Switzerland: Bern; Fribourg; Glarus; Graubünden; Luzern; Schwyz; Ticino; Uri; Unterwalden; Vaud; Valais; France: Alpes-de-Haute-Provence; Alpes-Maritimes; Vaucluse; Var; Italy: Veneto; Trentino Alto Adige; Slovenia: Alpine and Pre-Alpine Slovenia; Trnovsky Gozd;