Lichens of Belgium, Luxembourg and northern France

Distribution map of Physcia dubia var. teretiuscula (Ach.) Clauzade & Cl. Roux © by Paul Diederich   Physcia dubia var. teretiuscula (Ach.) Clauzade & Cl. Roux
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Physcia dubia var. teretiuscula – Luxembourg (Ard.), Kautenbach – © 1998 by Charles Reckinger

Syn.: P. teretiuscula (Ach.) Lynge

Mainly on natural, exposed, siliceous outcrops, usually in thermophilous habitats, rare on artificial substrates like roofs and old walls, once found on tree nearby rocks covered by the taxon.

Belgium: Mosan: R, Ard.: AR.

Luxembourg: Ard.: AR.

France: - .

Lit.: La66: 477-478, Mü1: 158, Giralt & van den Boom (1996: 81), Lambinon (1968b: 405).

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