Arthothelium lirellans (Almq.) Coppins
Syn.: Arthonia lirellans Almq.
Lichenised. Poorly known taxon.
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 smooth bark in woodlands with a long ecological continuity, in sites with an oceanic climate; distribution still insufficiently known, perhaps sometimes mistaken for Arthonia punctiformis.
Austria: Kärnten; Steiermark;
