Gyalidea scutellaris (Bagl. & Carestia) Lettau

Syn.: Gyalecta arctica Malme, Gyalecta pseudogeoica Anzi, Gyalecta scutellaris Bagl. & Carestia
Lichenised.
Substrate: siliceous rocks, acidic soil (mostly on siliceous substrata)
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: an arctic-alpine species found on humid, acid substrata, such as moribund bryophytes and soil rich in humus, with optimum above treeline.
Austria: Tirol; Salzburg; Italy: Veneto; Lombardia; Piemonte;