LICHALP

Caloplaca tetraspora (Nyl.) H. Olivier

Syn.: Blastenia tetraspora (Nyl.) Rehm, Bryoplaca tetraspora (Nyl.) Søchting, Frödén & Arup, Caloplaca oligospora Th. Fr., Lecanora tetraspora Nyl.

Lichenised.

Substrate: calciferous soil, plant debris

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 boreal-montane to arctic-alpine, circumpolar species found on bryophytes and plant debris in areas with base-rich or somehow calciferous siliceous substrata; certainly more widespread in the Alps.