Thallus lobate, spreading, loosely to closely attached, 5-10-(12) cm diam., rarely to 20 cm and ± orbicular in well-developed specimens, corticolous. Lobes broad, 1-2 cm wide, undulate, subimbricate centrally, margins entire, sinuous, slightly incised. Upper surface bright green or olive-green, brownish or reddish-brown, coriaceous, smooth, matt, rather uneven in parts, without soredia or isidia, sometimes faintly white-maculate (×10 lens), margins suffused-brownish. Internal cephalodia visible as hemispherical swellings. Lower surface pale creamish or buff, margins white, glabrous, shining in a narrow zone, then ± uniformly short, pale, tomentose from margins to centre, tomentum variable, pale whitish, to buff or brown. Cyphellae conspicuous, large, 0.2-2 mm diam., ± circular, white, margins raised ± prominent, evenly scattered from centre to margins. Apothecia sessile or subpedicellate, scattered or crowded towards margins, rarely central, 0.8-4 mm diam., disc matt or glossy, smooth, bright yellow-orange, concave, obscured by margin at first then becoming plane to subconvex with age, margins thick, pale whitish or cream, crenulate, thalline exciple pale cream, areolate-verrucose. Ascospores fusiform, ellipsoid, 1-3-septate, (26-)32-46(-50) × 8-11 µm.