Lepraria caesioalba (B. de Lesd.) J.R. Laundon

Syn.: Crocynia caesioalba B. de Lesd., Lepraria zonata Brodo, Leproloma caesioalbum (B. de Lesd.) M. Choisy
Lichenised.
Substrate: living mosses, siliceous rocks
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: on bryophytes, more rarely on siliceous rocks wetted by rain, especially on basal parts of siliceous boulders with a long snow cover; widespread throughout the Alps.
Austria: Vorarlberg; Tirol; Salzburg; Kärnten; Steiermark; Switzerland: Graubünden; Schwyz; Ticino; Uri; Valais; France: Alpes-de-Haute-Provence; Alpes-Maritimes; Isère; Haute-Savoie; Vaucluse; Var; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte; Slovenia: Alpine and Pre-Alpine Slovenia;