Lichens of Belgium, Luxembourg and northern France
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Trapelia coarctata (Sm.) M. Choisy |
Syn.: Lecanora coarctata (Sm.) Ach., Lecidea coarctata (Sm.) Nyl.
On siliceous rocks, in natural and artificial habitats, also on pebbles, locally abundant on railway ballast.
Belgium: Mar.: RRR, Fl.: AR, Camp.: AR, Mosan: AR, Ard.: AR-AC, Lorr.: AR.
Luxembourg: Ard.: R, Lorr.: AR.
France: Ard.: RR.
Lit.: Mü1: 143, NL84: 18, NL92: 174, Sé: 144, Coppins & van den Boom (1995: 89).