Umbilicaria vellea

Foliose umbilicate, saxicolous on siliceous rocks.
Note: lower surface with abundant dark rhizines not joined the rock.
Apothecia in small numbers, dark disc, with rich folds.
Spores unicellular, colorless and usually triangular, 10-14 x 7-9 micras.
Lithology: schist
Altitude: 1.985 m
Municipality: Abrucena