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False panicle erect, rather stiff, composed of 4–6 fastigiate tiers; spatheole 5–7 cm long, narrowly lanceolate, glabrous or sometimes hirsute, yellowish-green eventually becoming reddish, the peduncle 1/2–2/3 as long; racemes 2–3 cm long, 2-awned per pair, not deflexed; superior raceme-base 2–3(5) mm long, the appendage 4–11 mm long, linear to narrowly lanceolate.
Robust perennial, tufted, up to 3 m high, yellow and green. Culms and awns yellow, leaves and spikelets green. Leaf blades up to 300 mm long, up to 12 mm wide. Spikelets (sessile) 6.5-7.5 mm long (pedicellate to 14 mm long), spikelets glabrous, lower glume of sessile spikelets narrowly grooved, awns 50-100 mm long.
Tufted, robust perennial 1000-3000 mm high; culms yellow. Leaf blade 300 x 12 mm. Sessile spikelet 6.5-7.5 mm long, lower glume with a deep narrow, median longitudinal groove; lemma 2-lobed, awned; awn 50-100 mm long, hairy, yellowish, relatively thick; callus pungent. Pedicelled spikelet up to 14 mm long.
Sessile spikelet 10–14 mm long (including the callus); callus 3–6 mm long; superior glume with or without a mucro up to 2 mm long; superior lemma with a yellowish awn 5–10 cm long.
Pedicelled spikelet 9–14 mm long, with or without a terminal bristle up to 6 mm long.
Caespitose perennial; culms 100–300 cm high.
A fastigiate yellowish inflorescence
Leaf laminas up to 30 cm × 6 mm.
Perennial up to nearly 3 m. high
