Collema furfuraceum (Arnold) Du Rietz

Syn.: Collema nigrescens (Huds.) DC. var. furfuraceum (Arnold) H. Olivier, Synechoblastus nigrescens (Huds.) Trevis. var. furfuraceum Arnold
Lichenised.
Substrate: bark
Altitudinal range: from the mesomediterranean belt (potential vegetation: evergreen broad-leaved forests dominated by Quercus ilex) to the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a mainly temperate, probably holarctic lichen found on bark of broad-leaved trees and on epiphytic mosses, more common in the past, presently confined to semi-natural, open lowland forests.
Austria: Tirol; Kärnten; Oberösterreich; Germany: Oberbayern; Switzerland: Graubünden; Ticino; Valais; France: Alpes-de-Haute-Provence; Haute-Alpes; Alpes-Maritimes; Drôme; Isère; Savoie; Haute-Savoie; Vaucluse; Var; Italy: Veneto; Trentino Alto Adige; Lombardia; Liguria; Slovenia: Alpine and Pre-Alpine Slovenia;