Lichens of Belgium, Luxembourg and northern France

Distribution map of Bacidia trachona (Ach.) Lettau  by Paul Diederich   Bacidia trachona (Ach.) Lettau
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Bacidia trachona – Luxembourg (Ard.), Moulin de Bigonville – © 2007 by P. Diederich

In shaded and sheltered underhangs of calcareous or siliceous rock, on walls, also in deep crevices at the base of trunks, on exposed roots of trees and on Quercus in old forests, often by rivers at water level.

Belgium: Mosan: RR, Ard.: R.

Luxembourg: Ard.: RR, Lorr.: RRR.

France: Ard.: RRR.

Lit.: NL97: 17, Kuborn & Diederich (2008).

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