Thallus glaucous grey-white or dingy creamish-white or pale olivaceous, matt, wrinkled-plicate or irregularly cracked, often obliterated by crowded verrucae, in patches 2-6 cm diam., in places whitish erose-subfarinose, corticolous. Fertile verrucae crowded, round to irregular 0.5-2.0 mm diam., ± hemispherical, white-farinose or concolorous with thallus. Apothecia 1-3 per verruca, innate, ostiole red-brown to black, punctiform to irregular 0.1-0.3(-0.7) mm wide, apex flattened, to ± papillate. Asci 8-spored, biseriate. Ascospores oval-ellipsoid, contents granular-oily to translucent, (43-)50-70(-78.3) × 26.1-39.1 µm, wall c. 8 µm thick, to 13.5 µm at apices. Chemistry: TLC nil.