Picture taken near Osseja, Alta Cerdanya, Oriental Pyrenees, France, on a seepage track, 40 % inclination, 1.200 m. altitude, on schists.
Common. It has been found at Montseny and Pyrenees.
Squamulous-areolate thallus, confluent areoles, rounded margins . grey-brown thallus with a tinge of green. Apothecia 0,2-0,8 mm, blue disc with pruina, margin thallus very protruding.
No spot reactions.
Interpretation of the species following F. Dobson, not the forms described by Clauzade & Roux in Likenoj de Okcidenta Europo.
Very good drawing in Pascale Tiévant , Guide des lichens, pag 65.