Thallus thin, granular-verrucose, matt or shining, white or grey-white to pale yellowish-grey, spreading, to 8 cm diam., muscicolous or terricolous. Apothecia to 4 mm diam., sessile to subpedicellate, disc concave at first, becoming plane or subconvex, mustard-yellow to orange or yellow-brown, margins persistent, rather thick, entire to irregularly crenate, inflexed, stipe near the base brownish and without anthraquinone crystals. Hypothecium thick, colourless, 100-150 µm tall. Ascospores 1 per ascus, colourless, 8-105(-120) × 25-45(-55) µm muriform, ellipsoid or oblong. Chemistry: Atranorin, chloratranorin, parietin [J. Santesson Dtsch. bot. Ges. N.F. 4: 5-21(1970)].