Lichens of Belgium, Luxembourg and northern France
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Phaeophyscia sciastra (Ach.) Moberg |
Syn.: Physcia sciastra (Ach.) Du Rietz
On exposed, natural, calcareous or rarely siliceous rocks, and in artificial conditions, incl. on roofs, asbestos and slate debris, always in at least slightly nitrophilous communities.
Belgium: Mosan: R, Ard.: AR, Lorr.: RR.
Luxembourg: Ard.: RRR, Lorr.: R.
France: Lorr.: RRR.
France: - .
Lit.: La66: 481.