Picture taken on the Third of May 2008, near Sant Jaume ermitage, Almenara Alta, Urgell, Lleida, Catalonia, gypsicolous soil. Surrounded by a parasite lichen, Acarospora nodulosa (=A. reagens).
The lichen has been already shown in this virtual guide but in very favourable conditions and with a lot of fructifications. When conditions are more hard there are almost no apothecia and looks substantially different.
Thick thallus, white, irregular, apothecia immersed with grey disc. A very common lichen on gypsum in the Ebro basin.