Thallus thin, superficial or immersed, smooth, rarely cracked, white or sometimes rusty red, often disappearing, effuse. Photobiont chlorococcoid algae. Anamorph: no information available. Teleomorph: ascomata apothecia, 200-600 µm diam., 100-200 µm high, emergent, sessile and scattered or in small clusters. Disc persistently deeply concave, almost perithecioid when young, pale orange to dark brown. True exciple well-developed, markedly fuscous brown to almost black, sometimes fissured. Epithecium pale green-brown. Hymenium (80-) 120-160 μm tall, pale brown above. Hypothecium very pale brown. Interascal tissue of abundate septate simple paraphyses 1-1.5 µm diam., within a gelatinous matrix. Asci (76-) 100-120 × (25-) 30-45 μm, clavate, thin-walled except for a slightly thickened apical tholus, K/I negative, with a ± small ocular chamber, 4- to 8-spored. Ascospores (18-) 24-35 (-43) × (10-) 12-16 (-21) μm, ellipsoidal, sometimes subglobose or attenuated at one end, muriform with 5-7 transverse septa and 2-3 longitudinal divisions, the septation irregular and the individual cells sometimes nearly globose, hyaline, smooth, without an epispore, gelatinous sheath or appendages.