Lichens of Belgium, Luxembourg and northern France
Phacothecium varium (Tul.) Trevis. |
Syn.: Arthonia varia (Tul.) Jatta, Celidium varium (Tul.) A. Massal.
Lichenicolous, on Xanthoria parietina.
Belgium: - .
Luxembourg: - .
France: Mar.: RRR (<1912).
Lit.: Vouaux (1912-14: 171-172).