Sarcogyne algoviae H. Magn. var. euthallina Asta & Cl. Roux
Lichenised. Poorly known taxon.
Substrate: calciferous rocks
Altitudinal distribution: subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: on rocks with a low content in calcium, in communities with Acarospora badiofusca; only known from high elevations in the Western Alps (France). This taxon does not belong to S. algoviae, and is probably a Polysporina of the simplex-complex, perhaps growing parasitically on a crustose lichen with a white thallus (Roux et coll. 2014).
