Bacidia auerswaldii (Hepp ex Stizenb.) Mig.

Syn.: Bacidia effusa (Auersw. ex Rabenh.) Lettau non (Sm.) Trevis, Bacidia effusella Zahlbr., Bilimbia effusa Auersw. ex Rabenh., Lecidea auerswaldii Hepp ex Stizenb., Lecidea effusa (Auersw. ex Rabenh.) Stizenb.
Lichenised.
Substrate: bark
Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a mild-temperate to humid subtropical, mainly subatlantic species of humid open forests, with a few records from the Eastern Alps only (Austria).
Austria: Salzburg; Oberösterreich; Niederösterreich (incl. Wien);