Thallus spreading, large, to 20 cm diam. Lobes ± discrete to imbricate, 2-10 cm long and to 2 cm wide, margins entire, sinuous, often ascending. Upper surface greyish-yellow or yellowish or brownish-green, dull, thinly tomentose, especially at, or towards margins, wrinkled-plicate or uneven-corrugate, reflecting patterns of veining on lower surface. Lower surface whitish to brown, tomentose, with narrow, elevated veins. Rhizines simple, pale to black, rather sparse, to 10 mm long. Apothecia on extended, ascending lobules, 4-5 mm diam., rounded, often reflexed, disc reddish to brown-black, margins pale, crenulate, thin. Ascospores acicular, colourless or pale yellowish, 3-5-septate, 45-70 × 3-4 µm. Chemistry: TLC nil.