Lichens of Belgium, Luxembourg and northern France
|Lecanora umbrina (Ach.) A. Massal.|
Corticolous on eutrophicated bark, rarely in forest on Quercus, exceptionally on lignum.
Belgium: Mar.: RR, Fl.: RRR, Camp.: RR, Ard., Lorr.: AR.
Luxembourg: Lorr.: AR.
France: Lorr.: RR.
The differences between this species and the mainly saxicolous L. dispersa have to be studied further.
Lit.: Di: 138, DSL: 240, Ho: 139, 151, Mü1: 152.