Lichens of Belgium, Luxembourg and northern France
Caloplaca pyracea (Ach.) Th. Fr. |
Corticolous, mainly on old stems and branches of Populus, more rarely on Sambucus or Tilia, one on a calcareous wall.
Belgium: Fl.: RRR, Camp.: RRR, Mosan: RR.
Luxembourg: Lorr.: RR.
France: - .
Lit.: L12: 81.