LICHALP

Sarcogyne cretacea Poelt

Lichenised.

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

Altitudinal range: from the alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers) to the nival belt (above the lower limit of perennial snow and glaciers)

Note: a species forming small chalky-white thalli in which the urceolate apothecia are completely immersed; on exposed cliffs of marly limestone and calcareous schists; so far only known from some scattered localities in the Alps.