LICHALP

Verrucaria polysticta Borrer

Syn.: Dermatocarpon subfuscellum (Nyl.) Servít, Verrucaria fuscella (Turner) Winch var. nigricans Nyl., Verrucaria nigricans (Nyl.) Zschacke, Verrucaria subfuscella Nyl.

Lichenised.

Substrate: calciferous rocks

Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)

Note: a species perhaps belonging to Placopyrenium; on calcareous rocks, often growing on the thalli of other crustose lichens, mainly Aspicilia calcarea and V. nigrescens; widespread in the Alps, but regionally not distinguished.