LICHALP

Umbilicaria polyrrhiza (L.) Fr.

Syn.: Actynogyra polyrrhiza (L.) Schol., Gyrophora pellita (Ach.) Ach., Gyrophora polyrrhiza (L.) Körb., Lichen polyrrhizos L., Umbilicaria pellita (Ach.) Ach.

Lichenised.

Substrate: siliceous rocks

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: on steeply inclined surfaces of siliceous rocks wetted by rain in humid-rainy areas, with optimum near and above treeline; several records from the Alps require confirmation.