Chaenotheca trichialis (Ach.) Th. Fr.

A rather common genus member characterized by the grey to grey-green granulose to areolate-squamulose thallus and frequently white-pruinose apothecia. However, the thallus may disintegrate into delicate coatings, be semi-immersed, or practically missing, making the species identification harder. Chaenotheca trichialis has a relatively wide ecological amplitude. It grows on acidic bark of both coniferous and deciduous trees and also on wood of snags. The lichen occurs from lowlands to mountains in various forest types, on old trees in avenues and in parkland landscape. In Europe (including the Czech Republic), the lichen is widespread and relatively abundant.

Ascomycota → Lichinomycetes → Coniocybales → Coniocybaceae → Chaenotheca