Thallus usually 1-3 cm diam, continuous, whitish grey to grey, verrucose, mostly covered with raised warts of 0.1-0.4 mm diam and 0.1-0.3 mm high, with sinuous outlines and/or cracks, resembling the thalline margins of the apothecia, without a hypothallus.
Anamorph: not known.
Teleomorph: ascomata apothecia, 0.4-1.0 mm diam, sessile, numerous, disc concave to flat, pale to medium brown, the margin raised, relatively thick, often incurved, whitish grey to grey, 0.1-0.3 mm thick and high, with sinuous outlines, with a gelatinous cortex 12-18 µm thick, to 25 um thick at the base, with chlorococcoid algae (mostly just below the cortex) and copiously filled with large, hyaline, angular pockets of crystals 15-70 µm diam, PD— . Hymenium hyaline, medium brown above, 60-85 µm tall, copiously or sparsely filled with tiny, pale brownish crystals between the paraphyses. Hypothecium hyaline, copiously filled with chlorococcoid algae and with pockets of crystals. Ascospores 13-17 x 7.5-9 µm, ellipsoidal, hyaline, the wall ca 0.7 µm thick.
Chemistry: thallus C— , PD—, K+yellow, UV— ; atranorin (constant) and gangaleoidin (in part of the collections) found with TLC.