Lichens of Belgium, Luxembourg and northern France
Opegrapha reactiva (Alstrup & D. Hawksw.) Etayo & Diederich |
Syn. Kalaallia reactiva Alstrup & D. Hawksw.
Lichenicolous, on the thallus of Ionaspis lacustris.
Belgium: Ard.: RRR.
Luxembourg: - .
France: - .
Lit.: L9: 15.