Lecanographa atlantica  

Thallus whitish, farinose, smooth or uneven. Apothecia elliptical to shortly lirelliform and occasionally branched, white- or grey-pruinose, not continuous at the base; ascospores fusiform, straight or slightly curved, 21–29 × 3.5–5.5 µm, 6- to 7(-8)-septate. Conidiomata not found. Thallus K–, C–, Pd–.