Collema subflaccidum Degel.

Syn.: Collema subfurvum auct.
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, incompletely holarctic species found on more or less isolated broad-leaved trees in humid-rainy areas; more common in the past, presently absent from urban areas and most common along the Southern and Western Alps.
Austria: Steiermark; Niederösterreich (incl. Wien); Switzerland: Ticino; France: Alpes-de-Haute-Provence; Alpes-Maritimes; Drôme; Isère; Savoie; Haute-Savoie; Vaucluse; Var; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Piemonte; Liguria; Slovenia: Alpine and Pre-Alpine Slovenia;