Thallus crustose, homoiomerous, ecorticate. Photobiont green, (thallus shows orange-yellow when scratched, colour fades on storage, best seen in fresh material) with or without soredia. Apothecia sessile, round to irregular, ± stellate, furcate or lirellate, innate to emergent and with a distinct thalline margin, disc black or brownish, epruinose. Hypothecium colourless to redbrown or blackish. Paraphyses slender, sparingly branched, brownish at apices. Asci clavate cylindrical with a tapering foot, apex with a dimple. Ascospores 8 per ascus, 3-septate, colourless, acicular-fusiform, sometimes curved.