LICHALP

Umbilicaria torrefacta (Lightf.) Schrad.

Syn.: Gyrophora erosa (Weber) Ach., Gyrophora erosa (Weber) Ach. var. torrefacta (Lightf.) Th. Fr., Gyrophora torrefacta (Lightf.) Cromb., Gyrophora torrida (Ach.) Röhl., Lichen torrefactus Lightf., Umbilicaria erosa (Weber) Hoffm., Umbilicaria torrida (Ach.) Nyl.

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, circumpolar lichen of siliceous rocks, most frequent above treeline; widespread, but only locally common, in the Alps.