Trapelia corticola Coppins & P. James

Lichenised.
Substrate: bark, lignum
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 spongy, loose bark of deciduous trees, sometimes on moribund epiphytic bryophytes in sheltered, humid woodlands at low elevations; from the Alps there are only a few scattered records.
Switzerland: Glarus; Schwyz; Unterwalden; Italy: Lombardia;