Lichens of Belgium, Luxembourg and northern France
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Schismatomma umbrinum (Coppins & P. James) P. M. Jørg. & Tønsberg |
On a sandstone rock in shaded and humid conditions, and on an underhang of siliceous rocks by a small river.
Belgium: Ard.: R.
Luxembourg: Lorr.: RRR.
France: - .
Lit.: L8: 77, L11, NL92: 163.