Very robust with a strong central cane, clambering culms several meters high, usually glabrous, freely branching; sheaths usually shorter, sometimes a little longer than the internodes, glabrous or rarely hispid, the margins glabrous or simetimes villous; ligule inconspicuous; blades usually asymmetrical, ovate-lanceolate to lanceolate, acuminate, the primary ones 10-15 cm. long, 3-6 cm. wide, those of the branches, especially the secondary branches, often much smaller, softly pubes-cent to glabrous on the lower surface, the upper surface glabrous or scabrous; panicles 5-20 cm. long, narrow, compact, or the lower branches somewhat distant and spreading, but densely flowered, the whole panicle sometimes open with implicate loosely flowered branches; spikelets 3-4 mm. long, green, nearly globose, at least at maturity.
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