Picture taken on the 6th April 2008, on the way Sant Jeroni Ermitage, Montserrat, Barcelona, Catalonia, in crevices of the conglomerates with calcareous cement and soil.
Common in Catalonia in stony calcareous soils.
Foliose lichen, thallus from gren-yellow to brown green, formed by overlapping squamules, very white pruinose on the margins. Lower surface dark. Apothecia up to 3 mm diameter, sometimes frequent but almost no existent in certain cases. Discs light brown.