Thallus thin, dingy grey-green or grey-white, fawnish or pale olivaceous, granular-warted, irregularly or shallowly areolate, effuse or lacking, in irregular patches 1-2(-4) cm diam. Apothecia sessile, hemispherical, flattened apically, 0.3-1.2 mm diam., margins entire, swollen, concolorous with thallus, pore neatly rounded, 0.04-0.2 mm diam., exciple indistinct, disc indistinct. Ascospores 1 per ascus, colourless at first, brown at maturity, muriform, broadly ellipsoid, straight or slightly curved, apices rounded or slightly pointed at one end, (110-)120-170(-190) × 25-42 µm. Chemistry: Nil.