Gyalecta nigritella Cl. Roux & M. Bertrand

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 resembling the Mediterranean G. thelotremella Bagl., but apothecia with black discs and margins, and ascospores smaller and submuriform; on dolomitic boulders; only known from the type locality in the Western Alps (at 1,265 m).
France: Alpes-Maritimes;