Bacidia sordida (Anzi) Lettau

Syn.: Bilimbia sordida Anzi
Lichenised. Poorly known taxon.
Substrate: calciferous rocks
Altitudinal distribution: montane belt (potential vegetation: deciduous forests dominated by Fagus sylvatica and closed coniferous forests with Picea abies)
Note: a species with a dirty white, thin, farinose, rimose-areolate thallus, small, black apothecia (turning brownish when wet) with a hyaline to pale brownish hypothecium, 8-spored asci, and 1-3-septate, hyaline, straight to slightly curved ascospores measuring 15-20 × c. 5 µm; only known from the type collection, on calciferous rocks at 1,350 m, this species could belong to Lecania.
Italy: Lombardia;