Lecanora expallens Ach.

Syn.: Lecanora conizaea (Ach.) Nyl., Lecanora expallens Ach. var. conizaea Ach., Lecanora foehrensis Erichsen, Lecidea soraliata Vain.
Lichenised.
Substrate: bark, lignum
Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: a mainly temperate species found on acid, generally rough bark, especially abundant on Quercus in open woodlands, sometimes on lignum; widespread and often common throughout the Alps.
Austria: Tirol; Salzburg; Kärnten; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Germany: Oberbayern; Schwaben; Switzerland: Bern; Luzern; Schwyz; Unterwalden; Valais; France: Alpes-de-Haute-Provence; Alpes-Maritimes; Drôme; Isère; Haute-Savoie; Var; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta; Liguria; Slovenia: Alpine and Pre-Alpine Slovenia; Trnovsky Gozd;