Verrucaria aberrans Garov.

Lichenised. Poorly known taxon.
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 species with a thin, spreading, dark olive to brown, continuous to rimulose thallus, hemispherically protruding perithecia (to 0.25 mm in diam.), an involucrellum adpressed in the apical region, and oblong to ellipsoid ascospores (to c. 30 µm long); on siliceous rocks (porphyr, granite) in the shade of deciduous forests; known from a few localities in the Italian Alps.
Italy: Lombardia;