Thallus creamish-white, roughened, 0.2 mm thick, matt or minutely granular-pruinose, verrucose-uneven, discontinuous or lacking, margins distinctly plicate-radiate-lobate, often obscured by crowded apothecia, in patches 0.5-3.5 cm diam. Apothecia numerous, crowded, sessile, constricted at base, round to irregular, crisped or undulate, 1-2 mm diam., disc pale to dark brown or red-brown, at first faintly grey-pruinose then naked, epruinose, concave to plane, margins concolorous with thallus, distinct, thin, entire or crenulate. Paraphyses simple, capitate, brownish at apices, to 5 µm diam. Ascospores ellipsoid, 8.3-10.2 × 3.4-5.1 µm. Chemistry: TLC nil.