Thallus: Not clearly delimited, thin and pale, on which rounded to irregular blackish soralia develop. Soralia sometimes becoming confluent. Soredia globose, farinose, 12-20 µm diam., composed of clusters of algal cells surrounded by short-celled hyphae, the exposed outer hyphae with dark brown pigment which has negative reactions with K and N.
Anamorph: not known.
Teleomorph: Ascomata apothecial and lecideine. The disc is black and plane to slightly convex. Proper margin thin, persistent, slightly paler than the disc. Exciple in section mostly colourless and interspersed with oil droplets, the upper, outer edge with dark capped hyphae. Hypothecium fuscous brown. Hymenium hyaline, interspersed with oil droplets. Asci Catillaria-type. Paraphyses capitate with dark brown caps. Ascospores colourless, 1-septate, 10-12 x 3-3.5 µm, lacking a perispore.