Picture taken on the 21/04/2007 close Sant Jordi fountain, near Collformic, Montseny, El Brull, Barcelona, on a deciduous tree, close the road, 1.100 m. altitude. It was very well represented.
It prefers upland areas and nutrient rich trees. Not very common in Catalonian territory.
Epiphytal, Thallus olive-green, with big lobes, normally with apothecia and without isidia and soredia. The thallus can be very large, up to 20 cms.