Thallus crustose, epi- or endophloeodal, cortex amorphous of coalescing, unorientated hyphae, yellowish-tawny, pale orange or not well differentiated from colour of substrate, hypothallus lacking. Photobiont green, , in subcortical layer, cells ± ovoid in uniseriate filaments. Perithecia in thalline verrucae, mono- or polycarpic in ± well-defined stromata, verrucae concolorous with thallus, reddish, orange, yellowish or whitish or brownish-black. Ostioles apical, black or white or grey-pruinose, punctiform to ± papillate. Hypothecium 8-20 µm tall. Paraphyses filling perithecial cavity, thin, septate, branched, netlike. Asci cylindrical-clavate with a well-developed endoascus. Ascospores 2-8 per ascus, colourless, muriform, 30-300 × 11-65 µm.