Lecania dubitans (Nyl.) A.L. Sm.

Syn.: Lecania dimera (Nyl.) Th. Fr., Lecanora dimera Nyl., Lecidea dubitans Nyl.
Lichenised.
Substrate: bark
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: a species recalling L. cyrtella, but with strongly curved ascospores; mostly on bark of broad-leaved trees; widespread in Europe but altogether rare; from the Alps there are some scattered records, mostly in the montane belt.
Austria: Steiermark; Niederösterreich (incl. Wien); Switzerland: Bern; Graubünden; Vaud; Valais; France: Isère;