Cliostomum corrugatum (Ach.) Fr.

Syn.: Biatora ehrhartiana (Ach.) W. Mann, Biatorina ehrhartiana (Ach.) Mudd, Biatorina graniformis (K.G. Hagen) A.L. Sm., Buellia cliostomoides A. Massal., Catillaria ehrhartiana (Ach.) Th. Fr., Catillaria graniformis (K.G. Hagen) Vain., Cliostomum graniforme (K.G. Hagen) Coppins, Lecanora ehrhartiana (Ach.) Fr., Lecidea corrugata Ach., Lecidea ehrhartiana (Ach.) Ach., Limboria corrugata (Ach.) Ach., Rhytisma corrugatum (Ach.) Fr.
Lichenised.
Substrate: bark, lignum
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 mainly cool-temperate species found on old oaks, but also on Abies in humid stands, more rarely on lignum (decorticated trunks, wooden poles); widespread throughout the Alps, but generally rare.
Austria: Tirol; Salzburg; Steiermark; Niederösterreich (incl. Wien); Germany: Oberbayern; Switzerland: Bern; Graubünden; Schwyz; Ticino; Uri; Unterwalden; Valais; France: Alpes-Maritimes; Italy: Veneto; Trentino Alto Adige; Lombardia; Slovenia: Alpine and Pre-Alpine Slovenia;