Thallus orbicular to spreading, often in dense swards, 10-20(-40) cm diam., loosely attached. Lobes broad, 1-3 cm wide, linear-elongate, dior trichotomously branching, to 12 cm long, apices discrete, contiguous to imbricate centrally, margins entire, sinuous, apices rounded or shallowly notched, without isidia, soredia, sinuses semicircular. Upper surface coriaceous, greenish or olivaceous when wet, yellowish-green to pale yellowish-grey when dry, smooth, shallowly wrinkled, undulate, matt or shining, without isidia, soredia, maculae or pseudocyphellae. Medulla white. Photobiont green. Lower surface pale buff or whitish at margins, dark brown, or black centrally, ± evenly tomentose, glabrous-wrinkled at lobe apices, tomentum short, dense, brown. Pseudocyphellae white, conspicuous, numerous, scattered, often crowded, to 1 mm diam. Apothecia emergent, submarginal or marginal, sparse to moderately common, 4-6 mm diam., subpedicellate, disc red-brown, epruinose, concave to plane, margins crenulate, pale whitish, thalline exciple corrugate-scabrid. Ascospores colourless to pale brownish, fusiform, 1-3-septate, 24-32 × 5-9 µm. Chemistry: 7β-acetoxyhopane-22-ol, hopane-15α,22-diol, hopane-7β,22-diol, norstictic, constictic and stictic acids.