Thallus very variable, usually of numerous, nodular, overlapping, rounded or slightly expanded, ± radiating lobes, very crowded or discrete, ± scattered, often forming twisted, coralloid, ± isidiate clusters; upper surface whitish, glaucous, pale grey- to olive-green, ends white-pruinose, opalescent grey-green when wet; lobes to 0.5 mm wide, apices often swelling and breaking down into coarse, granular soralia, paler or concolorous with the thallus. Anamorph: no information available. Teleomorph: ascomata apothecia, rare, sessile, ± globose. Thalline exciple ± persistent, thin and irregular, later becoming excluded. Disc 0.3-0.6 mm diam., pinkish or red-brown, flat to convex. Epithecium brown to red-brown. Hypothecium hyaline to bright orange-brown. Interascal tissue of unbranched paraphyses 1.5-2 μm diam., with swollen apices (ca 4-5 μm diam.) that often have an internal brown apical cap. Asci clavate, 8-spored. Ascospores 9-11.5 (-14) × 4.5-5 (-6) μm, aseptate or rarely 1-septate, ellipsoidal, hyaline, smooth, without an epispore, gelatinous sheath or appendages. Chemistry: thallus C–, K+ faint yellow, KC+ faint yellow, Pd–, UV– (± atranorin).