LICHALP

Polyblastia cinerea (A. Massal.) Jatta

Syn.: Amphoridium cinereum A. Massal., Verrucaria dictyospora Stizenb.

Lichenised. Poorly known taxon.

Substrate: calciferous rocks

Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)

Note: on sheltered calcareous rocks near or above treeline; a critical taxon, which deserves further study.