Thallus effuse, or forming small patches to 1 cm diam. Areoles convex, scurfy or granular-verrucose, dark dull olivaceous-brown to grey-black. Photobiont cells 7-21 μm diam. Anamorph: not known. Teleomorph: ascomata apothecia 150-400 µm diam., flat to convex, black, usually glossy. True exciple reflexed and excluded, hyaline to pale brown or dark brown on the outside edge. Hymenium 40-50 μm tall, hyaline. Epihymenium aeruginose-green to brownish, K– lighter green. Hypothecium hyaline or faintly olivaceous, sometimes dull orange (K+ purplish-red) in the upper part, ascus and ascospore contents also sometimes with orange, K+ purplish-red pigment. Interascal tissue of a network of frequently branched pseudoparaphyses 1-1.5 (-1.7) μm, the apices not swollen. Asci to 35 x 20 µm, clavate to saccate, almost sessile, thick-walled with a broad apical cushion, 8-spored. Ascospores (7-) 9-14 (-17) × 4-6 μm, ellipsoidal or ovoid-ellipsoidal, rarely cylindric-fusiform and ± curved, 0- or 1- ( to 3-) septate, the septum often eccentric, hyaline, thin-walled, smooth, without an epispore or gelatinous sheath.