Solorina monospora Gyeln.

Syn.: Solorina bispora Nyl. var. monospora (Gyeln.) Frey
Lichenised.
Substrate: calciferous soil
Altitudinal range: from the subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron) to the alpine belt (potential vegetation: treeless Alpine grasslands and tundras, to the lower limit of perennial snow and the equilibrium line of glaciers)
Note: a taxon of the S. bispora-group with 1-spored asci and very large (c. 120 µm long), usually 2-septate ascospores; on basic soil over shaded limestone or calcareous schists in alpine environments; scattered in the European and Asian mountains, but not consistently distinguished, and perhaps more widespread in the Alps.
Austria: ?Vorarlberg; Salzburg; Steiermark; Oberösterreich; Niederösterreich (incl. Wien); Germany: Oberbayern; Switzerland: Graubünden; Schwyz; France: Savoie;