Thallus 3-5 cm diam., whitish to pale olivaceous, thick, encrusting, shining ± varnish-like, continuous, to irregularly cracked, dimpled to irregular-verrucose. Apothecia numerous, crowded, 0.05-1.0 mm diam., blister-like, to globose and ± subpedicellate, distinctly white-frosted ± verruculose with age, apex flattened, pore very small, often obscured, at length opening to form a ± plane, expanded disc, surface of disc ± arachnoid-tomentose or farinose. Ascospores 1 per ascus, 10-12-septate, broadly ellipsoid, colourless to pale brownish at maturity, 90-140 × 17-30 µm. Chemistry: Nil.