LICHALP

Verrucaria fusca Pers.

Lichenised. Poorly known taxon.

Substrate: calciferous rocks, intermediate rocks (such as calciferous schists)

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: an often misunderstood taxon, closely related to or even identical with V. nigrescens, with a thin, olive-brown, granulose thallus, and up to c. 20 µm long ascospores.