Arthopyrenia subcerasi (Vain.) Zahlbr.
Syn.: Metasphaeria subcerasi (Vain.) Vain., Verrucaria subcerasi Vain.
Non- or doubtfully lichenised.
Substrate: bark
Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a mainly boreal-montane, non-lichenised species occurring on the bark of Betula, known from Scandinavia, the United Kingdom, Galicia, and the Alps.
