Lichens of Belgium, Luxembourg and northern France
Caloplaca arcis (Poelt & Vezda) Arup |
Syn.: Caloplaca britannica auct. neerl., non R. Sant.
On walls.
Belgium: Mar.: RR, Fl.: RR, Camp.: R, Brab.: R.
Luxembourg: Ard.: RRR, Lorr.: RRR.
France: - .
Lit.: L14: 99, Aptroot & van Herk (2004), van den Broeck & Aptroot (2003).