Catillaria minuta (A. Massal.) Lettau

Syn.: Biatorina arnoldii Kremp., Biatorina arnoldii Kremp. var. luteella (Nyl.) A.L. Sm., Biatorina minuta A. Massal., Catillaria arnoldii (Kremp.) Th. Fr.
Lichenised.
Substrate: calciferous rocks
Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) 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 mainly mild-temperate species found on steeply inclined or underhanging faces of compact limestones in sheltered situations, e.g. in narrow gorges along creeks.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Germany: Oberbayern; Schwaben; Switzerland: Schwyz; France: Alpes-Maritimes; Haute-Savoie; Vaucluse; Italy: Friuli; Veneto; Lombardia;