LICHALP

Psorotichia frustulosa Anzi

Syn.: Collemopsis frustulosa (Anzi) Nyl.

Lichenised.

Substrate: calciferous rocks, siliceous 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: a species characterised by a thin, small-areolate thallus, sessile apothecia with a prominent thalline exciple, a conspicuous, thick, smooth thalline margin, and dark red apothecial discs, the asci are 8-spored; on steeply inclined, sunny surfaces of calcareous or basic siliceous rocks in upland areas; a rarely collected species, also known from Korea and North America.