Verrucaria geomelaena Anzi

Lichenised. Poorly known taxon.
Substrate: calciferous soil
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 species with a very thin, spreading, subgelatinous thallus, very small, spherical perithecia immersed only with the base, a non-amyloid hymenium with free paraphyses, 6-8-spored asci, and simple, hyaline, oblong ascospores measuring c. 18.9 × 6.8 µm; only known from the type collection, on calciferous soil between 1,820 and 2,100 m. The type material is well worthy of further study.
Italy: Lombardia;