Thallus ± closely attached throughout, to 6 cm diam. Lobes 1-3 mm broad, flat, short and rounded to somewhat elongate, contiguous to imbricate. Upper surface pale olive-tan to olive-brown, distinctly maculate at lobe ends, finely pitted or wrinkled near apices, more so centrally, shining at apices, matt centrally, isidiate, soredia and pseudocyphellae absent. Isidia cylindrical or slightly compressed, simple or branched, 3 mm tall. Lower surface black, paler or tan at margins, smooth to wrinkled, dull to shining, moderately rhizinate. Rhizines concolorous with lower surface, to 0.5 mm long. Apothecia rare, sessile to subpedicellate, ± flat, to 1.5 mm diam., margins isidiate. Ascospores ovoid, 9-12 × 5.5-7. µm. Chemistry: Cortex K-, medulla K-, C+ rose, KC+ rose, Pd-. Gyrophoric acid.