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 rarely collected species with a pale brown thallus of dispersed, subspherical areoles developing on bleached squamules of Trapelia glebulosa and T. coarctata, with, convex to subspherical, black-brown apothecia (0.3-0.4 mm in diam.), a dark brown epihymenium and hypothecium, 8-spored asci, and hyaline, submuriform ascospores (12.5-16 × 5.5-7.5 μm) with 2-4 transverssal septa and c. 4-7 cells visible in optical section; on various types of schists; rare in Western and Central Europe; the identification of material from Switzerland is not completely certain.
