Peltigera polydactylon (Neck.) Hoffm.

Syn.: Lichen caninus L. var. polydactylon (Neck.) Lightf., Lichen polydactylus Neck., Peltidea polydactyla (Neck.) Ach., Peltigera canina (L.) Willd. var. polydactyla (Neck.) Branth. & Rostr., Peltigera rufescens (Weiss) Humb. var. polydactyla (Neck.) Torss.
Lichenised.
Substrate: living mosses, bark, calciferous soil, acidic soil (mostly on siliceous substrata)
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) 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: an ecologically wide-ranging species of both mineral and organic, often base-rich soil, and on basal parts of mossy trunks and stumps in open forests, with optimum in the montane belt; widespread throughout the Alps.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Germany: Oberbayern; Schwaben; Switzerland: Bern; Glarus; Graubünden; Luzern; St. Gallen; Schwyz; Ticino; Uri; Unterwalden; Vaud; Valais; France: Alpes-de-Haute-Provence; Haute-Alpes; Alpes-Maritimes; Isère; Savoie; Haute-Savoie; Vaucluse; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta; Slovenia: Alpine and Pre-Alpine Slovenia; Trnovsky Gozd;