Lichen with pruinose apothecia

Lichen with pruinose apothecia

Observation - Lichen with pruinose apothecia - UK and Ireland. Description: Lecanorine apothecia growing on limestone in north wall of church. Apothecia have dark, almost black, pruinose discs and white-grey cylindrical margins with many splits. No definite thallus seen. Possibly Lecanora crenulata. (Also small patches of Diplot

Lecanorine apothecia growing on limestone in north wall of church. Apothecia have dark, almost black, pruinose discs and white-grey cylindrical margins with many splits. No definite thallus seen. Possibly Lecanora crenulata. (Also small patches of Diplotomma alboatrum in picture i)