LICHALP

Caloplaca exsecuta (Nyl.) Dalla Torre & Sarnth.

Syn.: Blastenia exsecuta (Nyl.) Servít, Lecanora exsecuta Nyl.

Lichenised.

Substrate: siliceous rocks, intermediate rocks (such as calciferous schists)

Altitudinal range: from the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron) 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 boreal-montane, probably circumpolar, very variable lichen of basic siliceous rocks in humid, wind-protected situations; certainly much more widespread in the Alps.