Thallus in irregular, continuous patches 2-6(-10) cm diam., olive-green to pale grey-green or fawnish, wrinkled-verrucose or shallow papillate, areolate-cracked, shining or matt. Fertile verrucae 0.5-1.5 mm diam., to 1.2 mm tall, sessile, rounded, white-sorediate at first, margins concolorous with thallus, thick, wrinkled-striate or ± exfoliating, white-pulverulent. Apothecia 1 per verruca, disc pale to dark red-brown or greyish with a thick, whitish pruina. Asci 8-spored, clavate, occasionally 4-6-spored with small or aborted spores. Ascospores oval, uniseriate, (18.7-)23-36(-40) × 12-15.5(-20.3) µm, wall 1.5-3 µm thick. Chemistry: 2 unidentified compounds.