Lichens of Belgium, Luxembourg and northern France
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Porpidia crustulata (Ach.) Hertel & Knoph |
Syn.: Lecidea crustulata (Ach.) Spreng., incl. var. macrospora Körb.
On siliceous rocks in natural and artificial (especially rubbles and pebbles) habitats.
Belgium: Camp.: RRR, Brab.: RRR, Mosan: AR, Ard.: AC, Lorr.: RR.
Luxembourg: Ard.: R.
France: Mar.: RRR (<1924).
Lit.: DG: 23, La69: 102, Mü1: 143, NL77: 21.