Cyrtidula hippocastani (DC.) R.C. Harris
Syn.: Mycoporum hippocastani (DC.) Coppins, Verrucaria hippocastani DC.
Non- or doubtfully lichenised.
Substrate: bark
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: on the branches of different broad-leaved trees, with optimum in the submediterranean belt.
Austria: Steiermark; Italy: Trentino Alto Adige;