LICHALP

Physcia caesia (Hoffm.) Fürnr. var. caesiella (B. de Lesd.) Clauzade & Cl. Roux

Syn.: Physcia caesiella (B. de Lesd.) Suza, Physcia subalbinea Nyl., Physcia tribacoides Nyl. var. caesiella B. de Lesd., Physcia wainioi Räsänen

Lichenised.

Substrate: siliceous rocks, calciferous rocks, living mosses, plant debris

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: ecologically similar to the typical variety, but most common in dry-warm valleys of the Alps.