Caloplaca lucifuga G. Thor

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 temperate species found on ancient, more or less isolated deciduous trees, especially oaks or Castanea, often in crevices of rough bark and on faces seldom wetted by rain; rare in the Alps.
Austria: Steiermark; Germany: Oberbayern; Switzerland: Graubünden; Ticino; Italy: Piemonte; Liguria;