Acarospora helvetica H. Magn.

Syn.: Acarospora intermedia H. Magn.
Lichenised. Poorly known taxon.
Substrate: siliceous 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: a taxon based on a type from the Alps; according to Roux it is different from A. complanata.
France: Alpes-de-Haute-Provence; Alpes-Maritimes;