LICHALP

Physcia dubia (Hoffm.) Lettau

Syn.: Lobaria dubia Hoffm., Physcia caesia (Hoffm.) Fürnr. var. dubia (Hoffm.) Th. Fr., Physcia dubia (Hoffm.) Lettau var. teretiuscula (Ach.) Clauzade & Cl. Roux, Physcia intermedia Vain., Physcia lyngei Nádv., Physcia teretiuscula (Ach.) Lynge, Physcia wahlenbergii Lynge

Lichenised.

Substrate: calciferous rocks, siliceous rocks, intermediate rocks (such as calciferous schists), bark, lignum

Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the nival belt (above the lower limit of perennial snow and glaciers)

Note: a widespread holarctic species with a broad latitudinal and altitudinal range, found on base-rich substrata, both in natural situations and on walls in villages, with a wide altitudinal range; widespread throughout the Alps.