Lichens of Belgium, Luxembourg and northern France

Distribution map of Physcia tribacia (Ach.) Nyl.  by Paul Diederich   Physcia tribacia (Ach.) Nyl.
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Physcia tribacia – Belgium (Brab.), Villers-la-Ville – © 2009 by C. Fontaine

On natural, sheltered, siliceous outcrops and on artificial substrates (mainly old walls), also corticolous on Fraxinus and Tilia on roadsides.

Belgium: Fl.: RRR, Brab.: RRR, Mosan: R, Ard.: R.

Luxembourg: Ard.: RR.

France: - .

Lit.: Ho: 167, 217, 618, La66: 476, NL92: 173, NL97: 53, WS: 50, 99, Ertz & Duvivier (2006: 52).

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