Foliose lichen of grey-green color. Easy to identify due to the net-shaped white lines (pseudocyphellae) that cover the lobe surfaces. The anverse of the lobes is dark brown, see pic. #3. It is widespread and common on branches and trunks of trees and less often on rocks.
Spotted at a pine-tree forest, on top of a moss covered granite rock. Reserva de la Biosfera del Real Sitio de San Ildefonso-El Espinar
Camera Model: NIKON D500. Exposure Time: 1/50 sec.; f/14; ISO Speed Rating: 1600. Focal Length: 90.0 mm. No flash fired