Lichens of Belgium, Luxembourg and northern France
Arthonia byssacea (Weigel) Almq. |
On bark of old Quercus in well-preserved forests.
Belgium: - .
Luxembourg: Lorr.: R.
France: - .
All specimens from the study area are sterile, only producing pycnidia.
Lit.: Di: 36-37, L5: 8, Tholl et al. (1999).