HABIT Perennial. Culms decumbent, or prostrate, or scandent; 30-300 cm long; rooting from lower nodes. Ligule a ciliolate membrane. INFLORESCENCE Synflorescence compound; paniculate. Inflorescence composed of racemes; terminal and axillary; subtended by a spatheole; enclosed. Spatheole ovate; membranous. Racemes single; bearing a triad of spikelets. Rhachis obsolete. Spikelets in threes. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 2 in the cluster. Pedicels oblong. STERILE SPIKELETS Companion sterile spikelets rudimentary, or well-developed; separately deciduous. Companion sterile spikelet glumes muticous. FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 2-6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus oblong; base obtuse. GLUMES Glumes exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; coriaceous; without keels; winged on keel; 13 -veined. Lower glume apex dentate; 2 -fid. Upper glume lanceolate; gibbous; chartaceous; 1-keeled; 5-9 -veined. Upper glume apex acute. FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret oblong; hyaline; 3 -veined; acute. Fertile lemma oblong; hyaline; without keel; 3 -veined. Lemma apex entire, or lobed; 2 -fid; incised 0.6 of lemma length; muticous, or awned; 1 -awned. Principal lemma awn from a sinus; straight, or geniculate. Palea hyaline; 0 -veined; without keels. DISTRIBUTION Africa, or Temperate Asia, or Tropical Asia, or Australasia, or Pacific.