Psorotichia leprosa (Anzi) Forssell

Syn.: Pyrenopsis leprosa Anzi
Lichenised. Poorly known taxon.
Substrate: calciferous rocks
Altitudinal distribution: submediterranean/colline belt (potential vegetation: mixed deciduous forests dominated by Quercus and Carpinus)
Note: a species with a thin, black, subleprose thallus of small granules, very small, globose to urceolate, sessile apothecia with a brown, punctiform disc and a margin concolour with the thallus, a IKI+ intensely blue hymenium of lax paraphyses, and ovoid to ellipsoid, hyaline, simple ascospores measuring 10-15 × 6-7 µm. Described from material growing on steeply inclined surfaces of calciferous marl near Como (Italy); the type material is worthy of further study.
Italy: Lombardia;