Rhizocarpon geographicum (L.) DC. subsp. frigidum (Räsänen) Hertel

Syn.: Rhizocarpon frigidum Räsänen, Rhizocarpon tinei (Tornab.) Runemark subsp. frigidum (Räsänen) Runemark
Lichenised.
Substrate: siliceous rocks
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: an arctic-alpine lichen found on exposed, steeply inclined to underhanging surfaces of siliceous rocks, mostly above treeline.
Austria: ?Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Switzerland: Bern; Graubünden; Ticino; Uri; Valais; France: Alpes-de-Haute-Provence; Alpes-Maritimes; Savoie; Haute-Savoie; Italy: Trentino Alto Adige; Lombardia; Valle d'Aosta;