Gyalolechia aurea (Schaer.) A. Massal.

Syn.: Caloplaca aurea (Schaer.) Th. Fr., Lecidea aurea Schaer., Thalloidima aureum (Schaer.) Müll. Arg.
Lichenised.
Substrate: calciferous soil, calciferous rocks
Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) 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 species of the mountains of Central and Southern Europe, found on plant debris and mosses in fissures and cracks of calcareous rocks and dolomite, with optimum above treeline; widespread but not always common in the Alps.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Germany: Oberbayern; Schwaben; Switzerland: Bern; Luzern; Uri; Unterwalden; Vaud; Valais; France: Alpes-de-Haute-Provence; Haute-Alpes; Haute-Savoie; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Valle d'Aosta; Slovenia: Alpine and Pre-Alpine Slovenia; Liechtenstein