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False panicle 20–40 cm long, large, lax, decompound; spatheoles 1.4–2.4 cm long, boat-shaped (lanceolate in profile), glabrous, russet-red tinged with yellow and green at maturity; peduncles 3–9 mm long, up to c. 1/3 the length of the spatheole, barbate above with white hairs; racemes 0.8–1.3 cm long, 3–5-awned per pair, projecting laterally from the spatheole, deflexed; raceme-bases subequal, short, the superior c. 1 mm long, flattened, stiffly barbate, with a scarious rim up to 0.4 mm long at the apex.
Robust perennial 1 500-3 000 mm high; with stilt roots; rhizomatous; culm 3.0-5.5 mm across. Leaf blade to 450 x to 15 mm. Spatheole 14-24 mm long; peduncle 3-9 mm long; raceme bases subequal, flattened, short-appendaged; raceme pairs with 3-5 awns. Sessile spikelet 4-5 mm long, nearly glabrous to sparsely and shortly white-hairy; awn 18-30 mm long; callus cuneate, 0.5-1.0 mm long. Pedicellate spikelet 5-8 mm long, glabrous, except margins ciliate, awn 1-4 mm long; anther 1.4-3.0 mm long.
Robust perennial, rhizomatous, up to 3 m high. With stilt roots. Leaf blades up to 450 mm long, up to 15 mm wide. Culms 3.0-5.5 mm across. Spikelets (sessile) 4-5 mm long (nearly glabrous to sparsely and shortly white-hairy, callus cuneate, 0.5-1.0 mm long). Spatheoles 14-24 mm long; peduncles 3-9 mm long; raceme pairs with 3-5 awns, 18-30 mm long; raceme bases subequal, flattened and short-appendaged; pedicellate spikelets glabrous, except margins ciliate.
Sessile spikelets 4–5 mm long; callus 0.5–1 mm long, cuneate, narrowly obtuse to subacute at the apex; inferior glume oblong-lanceolate, glabrescent to sparsely and shortly pubescent; awn 1.8–3.2 cm long, the column pubescent with pallid or tawny hairs.
Pedicelled spikelets 5–8 mm long, glabrous to puberulous on the back, ciliate on the margins, terminating in an awn-point up to 6 mm long; callus scarcely developed; pedicel-tooth obscure.
Homogamous spikelets 7–9 mm long, a single pair at the base of the inferior raceme only, glabrous to puberulous on the back, ciliate on the margins.
Robust perennial arising from a short rhizome clad in hard cataphylls; culms up to 300 cm high, supported by stilt roots, initially decumbent.
Leaf sheaths glabrous or sometimes pubescent at the base; leaf laminas up to 45 cm × 15 mm, firm, glabrous or rarely hirsute at the base.
