Typus: Papua New Guinea, Madang, Ramu valley, Brahman, along road to Bundi, on branches of Dipterocarpaceae tree in virgin lowland rain forest, 200 m, August 1992, Aptroot 31685 (B, holotypus).

Thallus corticate, smooth to uneven, white to pale grey.

Lirellae erumpent, with basal thalline margin, elongate and irregularly branched, 1–5 × 0·1–0·2 mm; labia eventually striate. Excipulum laterally carbonized; hymenium clear. Ascospores 8 per ascus, transversely 9–11-septate, 20–30 × 4–6 µm, hyaline.

Secondary chemistry. Stictic and hypostictic acid.