Umbilicaria aprina Nyl.
Syn.: Gyrophora aprina (Nyl.) Nyl.
Lichenised.
Substrate: siliceous rocks
Altitudinal range: from the alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers) to the nival belt (above the lower limit of perennial snow and glaciers)
Note: an arctic-alpine species of hard siliceous rocks above treeline; the only record from the Alps is from Mt. Blanc.
