LICHALP

Tephromela grumosa (Pers.) Hafellner & Cl. Roux

Syn.: Lecanora atra (Huds.) Ach. var. grumosa (Pers.) Ach., Lecanora grumosa (Pers.) Du Rietz, Lichen grumosus Pers.

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: a mainly cool-temperate lichen found on steeply inclined surfaces of acidic siliceous rocks; perhaps somehow more widespread in the Alps, being often sterile and hence easy to overlook.