Porpidia trullisata (Kremp.) Körb.

Syn.: Diplotomma trullisatum Kremp., Lecidea euspeirea Nyl., Lecidea speirea (Ach.) Ach. var. trullisata (Kremp.) Arnold, Lecidea trullisata (Kremp.) Anzi
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 nival belt (above the lower limit of perennial snow and glaciers)
Note: on north-facing, steeply inclined surfaces of weakly calciferous rocks with optimum above treeline.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Oberösterreich; Germany: Schwaben; Switzerland: Bern; Luzern; Ticino; Vaud; France: Alpes-de-Haute-Provence; Haute-Alpes; Savoie; Haute-Savoie; Italy: Trentino Alto Adige; Piemonte; Valle d'Aosta;