Thallus poorly developed, or of scattered to ± densely packed, imbricate, coralloid or squamiform external cephalodia, 1-3 mm tall, grey-blue to ± fulvescent or rarely brown-black, spreading in patches, 2-10 cm diam., terricolous. Apothecia common, 1-5 mm diam., rounded, shallowly concave to ± urceolate, margins 0.1-1.0 mm wide, flattened, pale green or olivaceous, often white-pruinose and appearing frosted, exciple coarsely scabrid, pale green, whitish or tinged red-brown, often with coralloid cephalodia, disc matt, pale to dark red-brown. Asci 4-spored.Ascospores broadly ellipsoid with rounded apices, 30-55 × 16-26 µm, epispore furrowed.