Catillaria chalybeia

Crustose saxicolous, no sun tolerant, on siliceous rocks and walls.
Note: thallus K-, Cl-, KCl-, epithecium and hymenium greenish, spores colourless with a septum, 8-10 x 3-4 micras:
Lithology: mica schist
Altitude: 1.370 m
Municipality: Abrucena