Biatorella germanica A. Massal. ex Körb.

Lichenised.
Substrate: calciferous rocks
Altitudinal range: from the montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies) to the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: on sheltered calcareous rocks; perhaps overlooked, but certainly not common, from the Alps there are only a few scattered records.
Germany: Schwaben; Switzerland: Vaud; Italy: Friuli; Piemonte;