LICHALP

Porpidia speirea (Ach.) Kremp. var. alpina (Hepp ex Arnold) Clauzade & Cl. Roux ex Hafellner & Türk

Syn.: Lecidea contigua (Hoffm.) Fr. f. alpina Hepp ex Arnold, Lecidea speirea (Ach.) Ach. var alpina (Hepp ex Arnold) Hertel

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 well-distinct taxon, not always distinguished from the other varieties, hence distribution poorly known.