Rinodina arnoldii

Crustose, cracked-aerolated, saxicolous, on horizontal calcareous rocks near the ground, shady places, in the image under Quercus ilex, 1.300 metres above sea level.
Note: Thallus C+ lightly red, wrinkled surface, apothecia lecanorinum, inmersed:
Spores brownish, bi-celled, between Pachysporaria type and Milvina type.
Lithology: limestone
Altitude: 920 m
Municipality: Enix