HABIT Perennial. Rhizomes short. Culms 60-100 cm long. Ligule a ciliolate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate, or ovate. Leaf-blade venation with distinct cross veins. INFLORESCENCE Monoecious; with male and female spikelets in the same inflorescence. Synflorescence on a separate leafless culm. Inflorescence a panicle. Panicle contracted. Sexes segregated; on unisexual branches; with male below. Spikelets solitary. Fertile spikelets pedicelled. Male spikelets pedicelled. Pedicels linear. FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4-9 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident. GLUMES Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume elliptic; 1 length of upper glume; membranous; without keels; 3-7 -veined. Lower glume apex obtuse. Upper glume elliptic; 0.75 length of adjacent fertile lemma; membranous; without keels; 3-7 -veined. Upper glume apex obtuse. FLORETS Fertile florets female. Fertile lemma elliptic; coriaceous; without keel; 5-7 -veined. Lemma surface pubescent. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 1 -awned. Palea tightly convolute around flower; 1 length of lemma; coriaceous; without keels. Palea surface pubescent. FLOWER Lodicules 3. Anthers 2-3. Stigmas 2. MALE Male spikelets distinct from female; lanceolate. Male spikelet glumes absent. Male spikelet lemma muticous, or awned. DISTRIBUTION Tropical Asia.