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Tufted perennial (300-)600-2300 mm high, erect to geniculate, often flushed purple; basal sheaths glabrous, sometimes sparsely hispid; culm usually stout, base (2.0-)3.5-7.0 mm wide. Leaf blade 130-500 x 3-12 mm. Inflorescence 80-150 mm long. Spikelet 2.0-2.5 mm long; glumes and lower lemma apices green with purple; glumes acuminate to mucronate, recurved; lower glume up to 2/3 the spikelet length; upper glume 5-7-nerved; lower floret male, lemma 5-nerved, palea well developed; upper lemma pale, smooth and shiny.
Spikelets mostly shortly pedicelled, 2–2.5 mm. long, ovate, glabrous; inferior glume 1/2–2/3 the length of the spikelet, broadly ovate, (1)3–5-nerved, recurved acuminate or produced into an awn point; superior glume 5(7)-nerved, ovate, recurved acute or acuminate; inferior lemma 5-nerved, ovate, acute to acuminate, its palea well developed, enclosing a male flower, superior lemma smooth and glossy.
A reed-like grass. It keeps growing from year to year. It forms tufts. The stems are 1-2 m high. The leaf blade is 25-50 cm long and 3-12 mm wide. The flowering stem is 15-45 cm long.
Panicle 15–45 cm. long, oblong, moderately to much branched, the branches appressed or ascending, loose or contracted.
Tufted perennial with robust unbranched or sparsely branched culms 60–230 cm. high.
Leaf laminae 25–50 cm. long and 3–12 mm. wide, linear, tapering to a pungent apex.
Basal sheaths glabrous or sometimes pubescent
A reed-like grass 1–2 m. high
