Yellowish green plants; stems terete to slightly keeled; successive pairs of foliage leaves separated by 1 pair of very acute intercalary cataphylls to 1.5 cm above base; basal cataphylls of lateral branches 1 pair, acute, sometimes with a second pair. Petiole 0.5 cm long, indistinct, stout; blade broadly lanceolate, to 15 x 9 cm, apex acute; usually 5 conspicuous long basal veins. Monoecious, sex distribution variable. Inflorescence to 5 cm long, mostly with simple peduncle to 1 cm long; fertile internodes 3-5, flowers ca. 12 per fertile bract, usually very regularly 3-seriate. Fruit ovoid to spherical, 0.3 cm long, perianth segments closed.