Acarospora discreta (Ach.) Th. Fr.

Syn.: Acarospora durietzii H. Magn., Parmelia squamulosa Ach. var. discreta Ach.
Lichenised. Poorly known taxon.
Substrate: 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: based on a type from extra-Alpine Europe (Scandinavia), with a few records from from the Swiss Alps.
Switzerland: Graubünden; Valais;