LICHALP

Lecanora swartzii (Ach.) Ach. subsp. swartzii

Syn.: Lecanora glaucoma (Hoffm.) Ach. var. swartzii (Ach.) Nyl., Lecanora sordida (Pers.) Th. Fr. var. swartzii (Ach.) Rabenh., Lecanora subradiosa auct. non Nyl., Lichen swartzii Ach., Zeora sordida (Pers.) Körb. var. swartzii (Ach.) Körb.

Lichenised.

Substrate: siliceous rocks

Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) 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: an arctic-alpine lichen found on steeply inclined to underhanging surfaces of siliceous rocks, with optimum near and above treeline; most frequent in the Alps, but also occurring in the high Mediterranean mountains.