Lecania inundata

Crustose saxicolous, on calcareous rocks.
Note: surface thallus with small, pale nodules 50-100 micras wide:

Thalline margin usually conspicuous, pale grey to pale brown; spores 1-septate 12-18 x 5,5-6 micras:

Altitude: 180 m
Lithology: limestone
Municipality: Carboneras