Calicium salicinum Pers.

One of the most common European genus members, characterised by an immersed thallus and black apothecia with a brown exciple. It grows on dead wood (especially on snags) and on deciduous trees with an acidic bark. The species prefers older trees in forests or non-forest communities. In central Europe and in the Czech Republic, it is sparse to locally common. Its occurrence is limited mainly by the amount of an appropriate substrate (old trees and snags).

Ascomycota → Lecanoromycetes → Caliciales → Caliciaceae → Calicium