Sarcogyne clavus (DC.) Kremp.
Syn.: Biatorella clavus (DC.) Th. Fr., Lecanora eucarpa (Nyl.) Nyl., Lecidea eucarpa Nyl., Lichen clavus (DC.) Ramond, Patellaria clavus DC., Sarcogyne eucarpa (Nyl.) Hellb., Stereopeltis carestiae De Not., Stereopeltis macrocarpa Franzoni & De Not.
Lichenised.
Substrate: siliceous rocks
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: on steeply inclined to underhanging surfaces of hard, mineral-rich siliceous rocks, especially granite, mostly in fissures of the rock.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Switzerland: Bern; Ticino; Uri; Vaud; Valais; France: Alpes-de-Haute-Provence; Haute-Alpes; Alpes-Maritimes; Isère; Haute-Savoie; Vaucluse; Var; Italy: Trentino Alto Adige; Lombardia; Piemonte; Slovenia: Alpine and Pre-Alpine Slovenia;