Buellia abstracta (Nyl.) H. Olivier

Syn.: Buellia sequax auct. non (Nyl.) Zahlbr., Lecidea abstracta Nyl.
Lichenised.
Substrate: siliceous rocks
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 much misunderstood silicicolous species, in the past frequently confused with B. sequax; for the study area there is a single record from the Southern Alps (Italy).
Italy: Trentino Alto Adige;