Lichens of Belgium, Luxembourg and northern France
|Caloplaca pusilla (A. Massal.) Zahlbr.|
On hard calcareous rocks and sandstone rocks, usually in dry, sunny and nitrophilous conditions, mainly in natural, incl. maritime habitats, occasionally on walls, mortar or concrete.
Belgium: Mosan: RRR.
Luxembourg: - .
France: Mar.: RR, Brab.: RRR, Mosan: RRR.
This species is probably much more common, but the entire material of C. saxicola still needs to be critically revised.
Lit.: Gaya (2009).