Lichens of Belgium, Luxembourg and northern France
Bacidina caligans (Nyl.) Llop & Hladun |
Syn.: Bacidia caligans (Nyl.) A. L. Sm., Woessia caligans (Nyl.) Sérus. & Diederich
On calcareous walls or concrete, or epiphytic, on Malus, Salix or Sambucus, usually in ruderal conditions.
Belgium: Mar.: RRR, Fl.: RR, Brab.: RRR, Mosan: RR, Ard.: RRR.
Luxembourg: Ard.: RRR, Lorr.: R.
France: Mar.: RR.
Lit.: Boul.: 74, Di: 51-52, L6: 139, NL84: 12, NL92: 168, NL97: 38, Purvis et al. (1992: 105).