Lichens of Belgium, Luxembourg and northern France

Distribution map of Placynthium subradiatum (Nyl.) Arnold  by Paul Diederich   Placynthium subradiatum (Nyl.) Arnold
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Placynthium subradiatum – France (Mosan), Ardennes, 1999, Diederich 15689 – © 2004 by Paul Diederich

On vertical faces of exposed, hard calcareous rocks, mainly on surfaces submitted to periodic flushing.

Belgium: Mosan: RR.

Luxembourg: - .

France: Mosan: RRR.

Lit.: Ertz: 20, L8: 68, NL84: 16.

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