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Robust annual or short lived perennial; culms 60–200 cm. high, 5–10 mm. in diameter at the base, erect or decumbent, often rooting at the lower nodes, the lower leaf-sheaths papery, loose; nodes glabrous, sharply demarcated, usually dark, the pigment strictly confined to the node.. Leaf-blades linear, 20–50 cm. long, 7–15 mm. wide, cordate to straight at the base, flat, lax, glabrous or sparsely pilose, acuminate.. Panicle ovate or oblong, 20–50 cm. long, sparsely to moderately branched, spreading, the spikelets evenly dispersed.. Spikelets ovate, 3–3.5 mm. long, acuminate; lower glume broadly ovate, 1/4–1/3 the length of the spikelet, membranous, 1–3-nerved, cuff-like, clasping the base of the spikelet, obtuse or acute; upper glume ovate, as long as the spikelet, membranous, 7–9-nerved, acuminate; lower lemma similar to the upper glume, sterile, its palea absent or poorly developed; upper lemma pale and glossy.
Tufted slender to robust, erect to decumbent, short-lived perennial or annual to 2000 mm high; hygro-and occasionally hydrophyte; sometimes rooting at lower nodes; culm 3-10 mm wide at base, soft, often spongy, nodes usually dark brown or black. Leaf blade 200-500 x 6-18 mm, expanded, glabrous; upper surface with large, usually white, prickles (always visible on upper leaves); papillae sometimes present. Inflorescence 130-500 mm long, sparsely to moderately branched, spikelets adpressed to branches. Spikelet 2.5-3.5 mm long, narrowly ovate, acute to acuminate, glabrous, light green, sometimes tinged with purple; lower glume broadly ovate,1/3 the spikelet length, 1-3-nerved; upper glume 7-9-nerved; lower floret sterile, lemma 7-9-nerved, palea absent or poorly developed, then narrower and shorter than lower lemma; upper lemma smooth, pale to yellowish, shiny.
Short-lived perennial or annual, hydrophyte (occasionally) or tufted (erect to decumbent and rooting at nodes), up to 2 m high, slender to robust. Leaf blades 200-500 mm long, 6-18 mm wide, upper leaf surface with large, usually white prickles always visible on upper leaves, papillae sometimes present. Spikelets 2.5-3.5 mm long. Inflorescence sparsely to moderately branched with spikelets appressed to branches; spikelets acuminate; lower glume broadly ovate, up to a third the length of spikelet; upper glume and lower lemma 7-9-nerved; lower floret sterile with palea absent or poorly developed; female-fertile (upper) lemma pale to yellowish, shiny.
Spikelets (2.7)3–3.5 mm. long, narrowly ovate, acuminate; inferior glume 1/4–1/3 the length of the spikelet, broadly ovate, 1–3-nerved, obtuse or acute; superior glume 7–9-nerved; inferior lemma similar to the superior glume, sterile, its palea poorly developed or absent; superior lemma and palea pallid or dark, glossy.
A grass. It has an irregular growth. It can grow 2 m high. The stems are rather thick. They are often bent down at the base. The leaves are broad and flat. The flowering shoots are much branched. They are narrow and erect. The spikelets are small and pointed. They are green.
Robust annual or short-lived perennial with soft herbaceous culms 60–200 cm. high, erect or decumbent and rooting at the lower nodes, the upper nodes sharply demarcated.
Panicle 20–50 cm. long, ovate or oblong, sparsely to moderately branched, the tertiary and sometimes the secondary branches appressed at maturity.
Leaf laminae 20–50 cm. long and 7–15 mm. wide, linear, flat, acute or acuminate.
0·6–2 m. high, with spongy culms
Broad lush leaves
