Thallus foliose, orbicular, loosely attached, 1-5 cm diam., corticolous. Lobes short, 1-3 mm long and to 1 mm wide, margins crenulate, imbricate. Upper surface yellow or yellowish-green or greyish-green, matt, epruinose. Lower surface white, rhizinate. Rhizines short, white, sub-marginal, of horizontal, white fibrils, projecting beyond margins. Apothecia numerous, covering most of thallus, 1-3 mm diam., pedicellate, disc plane to subconvex, yellow-orange, margins thin, entire, concolorous with thallus. Ascospores 11-13 × 6-8 µm. Pycnidia globose, 200 µm diam., singly in prominent orange warts on upper surface. Conidia cylindrical, 3 × 0.8 µm.