Lichens of Belgium, Luxembourg and northern France
Umbilicaria hirsuta (Westr.) Hoffm. |
On exposed, natural outcrops of siliceous rocks and on slate debris in old quarries.
Belgium: Mosan: RRR, Ard.: AR.
Luxembourg: - .
France: Ard.: R.
Lit.: La66: 351-354, La69: 145-146, NL77: 23.