Chaenotheca chlorella (Ach.) Müll. Arg.

Syn.: Calicium carthusiae Harm., Calicium chlorellum Ach., Chaenotheca carthusiae (Harm.) Lettau, Chaenotheca suzai Nádv.
Lichenised.
Substrate: bark, lignum
Altitudinal range: from the submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: optimum on old oaks inside forests, in fissures of the bark, sometimes on decorticated trunks, also of conifers, especially on dry undersides and inside hollow trunks.
Austria: Salzburg; Switzerland: Bern; Valais; France: Haute-Savoie; Italy: Friuli; Veneto; Trentino Alto Adige; Lombardia; Liguria;