Verrucaria nigrofusca Servít

Lichenised. Poorly known taxon.
Substrate: calciferous rocks, siliceous rocks
Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: a species described from the Czech Republic and also reported from France (Maritime Alps), and Liguria (outside the Alps) on both calcareous and basic siliceous rocks. It differs from V. fuscoatroides in the smaller perithecia and spores.
France: Alpes-Maritimes;