Arthrosporum populorum A. Massal.

Syn.: Arthrosporum accline (Flot.) A. Massal., Bacidia acclinis (Flot.) Zahlbr., Bacidia populorum (A. Massal.) Trevis., Bilimbia acclinis (Flot.) Trevis., Bilimbia populorum (A. Massal.) Vain., Lecidea acclinis Flot.
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 mild-temperate lichen found on smooth bark of deciduous trees and shrubs, especially Fraxinus, Populus and Salix; widespread in the Alps, but probably declining.
Austria: Tirol; Salzburg; Kärnten; Steiermark; Niederösterreich (incl. Wien); Switzerland: Graubünden; Valais; France: Alpes-Maritimes; Haute-Savoie; Vaucluse; Var; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte; Liguria;