HABIT Perennial. Rhizomes elongated. Culms erect; reed-like; 300-1000 cm long. Ligule a ciliolate membrane. INFLORESCENCE Dioecious. Inflorescence a panicle. Panicle open. Spikelets solitary. Fertile spikelets pedicelled. FERTILE SPIKELETS Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets cuneate; laterally compressed; 7-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; glabrous, or pilose. GLUMES Glumes deciduous; exceeding apex of florets; recurved at apex. Lower glume linear; 0.3-0.5 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume linear; 1.5-2 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex caudate. FLORETS Fertile florets female. Fertile lemma elliptic; membranous; without keel; 3 -veined. Lemma surface plumose. Lemma margins involute. Lemma apex caudate. Palea 0.25 length of lemma; 2 -veined. FLOWER Lodicules 2. Anthers 2. Stigmas 2. MALE Male inflorescence similar to female; a panicle. Male spikelets distinct from female. Male spikelet glumes 2. DISTRIBUTION Africa, or North America, or South America.