Pyrenopsis grumulifera Nyl.
Syn.: Pyrenopsis multispora Coppins
Lichenised.
Substrate: calciferous rocks, intermediate rocks (such as calciferous schists)
Altitudinal distribution: subalpine belt (potential vegetation: open, taiga-like forests dominated by Larix decidua and/or Pinus cembra and Rhododendron)
Note: a species with a crustose, blackish-brown, areolate thallus, immersed apothecia with punctiform discs, and polyspored (up to 64) asci with ellipsoid ascospores; on moist rocks; widespread in NW Europe; apparently rare in the Alps but likely to be undercollected.
Austria: Tirol; Kärnten; Switzerland: Schwyz;
