LICHALP

Verrucaria obfuscans Nyl.

Lichenised. Poorly known taxon.

Substrate: calciferous rocks

Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)

Note: a species apparently belonging to the V. nigrescens-group, with a relatively thick, brown, areolate thallus, immersed ascomata (to c. 0.3 mm in diam.) with a hardly pigmented perithecial wall, and ellipsoid to oblong ascospores (to c. 20 µm long), based on a type from Paris in France; on walls and other anthropogenic substrates at low elevations; rarely recorded because not always distinguished, known from a few localities in the Alps.