Lichens of Belgium, Luxembourg and northern France

Distribution map of Collema polycarpon Hoffm.  by Paul Diederich   Collema polycarpon Hoffm.
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Collema polycarpon – Belgium (Lorr.), Colmey, 1968, Lambinon 68/416 (LG) – © 2004 by Paul Diederich

Syn.: C. orbiculare (Schaer.) Tonglet

On exposed and rather dry calcareous rocks, in natural habitats.

Belgium: Mosan R.

Luxembourg: - .

France: Mosan: RRR, Lorr.: RRR.

Lit.: DG: 20, Ertz: 19, NL84: 13, Degelius (1954: 220-238), Ertz & Duvivier (2006: 48).

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