Lichens of Belgium, Luxembourg and northern France
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Placidium rufescens (Ach.) A. Massal. |
Syn.: Catapyrenium rufescens (Ach.) Breuss, Dermatocarpon rufescens (Ach.) Th. Fr.
In crevices of old calcareous walls.
Belgium: Mosan: RR, most probably overlooked.
Luxembourg: - .
France: - .
Lit.: Breuss (1990: 104-111).