Biatora rufidula (Graewe) S. Ekman & Printzen
Syn.: Bacidia rufidula (Graewe) Zahlbr., Bilimbia rufidula Graewe, Lecidea rufidula (Graewe) Stizenb.
Lichenised.
Substrate: bark
Altitudinal distribution: subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: a boreal-montane lichen, restricted to Picea abies in the subalpine belt of the Alps; probably more widespread in the Alps, but perhaps declining.
Germany: Oberbayern; Italy: Trentino Alto Adige;