Placidiopsis custnani (A. Massal.) Körb.

Syn.: Catapyrenium custnani (A. Massal.) Jatta, Dermatocarpon cartilagineum (Nyl.) Zahlbr., Dermatocarpon crenulatum (Nyl.) Mig., Endocarpidium custnani (A. Massal.) Müll. Arg., Endocarpon cinereum Pers. var. cartilagineum Nyl., Endocarpon custnani (A. Massal.) Hepp, Endopyrenium cartilagineum (Nyl.) P. Syd., Paraplacidiopsis crenulata (Nyl.) Servít, Placidiopsis cartilaginea (Nyl.) Vain., Placidiopsis crenulata (Nyl.) Zschacke, Placidium custnani A. Massal., Verrucaria cinerascens (Nyl.) Nyl. var. crenulata Nyl., Verrucaria crenulata (Nyl.) Nyl.
Lichenised.
Substrate: calciferous soil,
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: an often overlooked terricolous lichen found on calciferous soil and calcicolous mosses, which seems to be most common in the submediterranean belt; apparently more frequent in the Western and Southern Alps.
Austria: Kärnten; Germany: Schwaben; Switzerland: Valais; France: Alpes-de-Haute-Provence; Alpes-Maritimes; Haute-Savoie; Vaucluse; Var; Italy: Veneto; Trentino Alto Adige; Lombardia; Piemonte; Valle d'Aosta;