Lichens of Belgium, Luxembourg and northern France

no map available   Placynthium posterulum (Nyl.) Henssen
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Placynthium posterulum – France (Mosan), Ardennes, Givet, 1999, Diederich 15685 – © 2004 by Paul Diederich

On hard calcareous rocks in sunny conditions, but submitted to periodic flushing.

Belgium: Mosan: RR.

Luxembourg: - .

France: Mosan: RRR.

Lit.: L14: 107.

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