Lichens of Belgium, Luxembourg and northern France
|Opegrapha parasitica (A. Massal.) H. Olivier|
Syn.: Leciographa monspeliensis (Nyl.) Müll. Arg.
The Belgian material published as O. parasitica or L. monspeliensis is here considered as belonging to O. rupestris. The true O. parasitica, which is lichenicolous on Aspicilia calcarea, does not occur in the study area.