Toninia cinereovirens (Schaer.) A. Massal.

Toninia cinereovirens forms a quite conspicuous thallus, which consists of thick brown squamules with a pale-coloured margin. The apothecia are usually black, sometimes with a white to blueish pruina. It grows on natural rock outcrops, usually on calcareous silicates and limestone, commonly in seepage tracks. In Europe, it occurs in the southern parts of the continent. It is rare in central Europe and in the Czech Republic. Most of its historical records have recently been confirmed. Quite abundant populations are known on the limestone and diabase in the Prokopské údolí valley; it also grows on serpentinites near Mohelno and on conglomerate rocks in the Krumlovsko-rokytenské slepence nature reserve.

Ascomycota → Lecanoromycetes → Lecanorales → Ramalinaceae → Toninia