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Caespitose perennial, the basal sheaths glabrous or sparsely pilose; culms 100–200 cm. high.. Leaf-blades up to 40 cm. long, 8 mm. wide.. False panicle up to 35 cm. long, narrow, lax; spatheoles linear, 4–7 cm. long, the peduncle from 2/3 to slightly longer than the spatheole; racemes 1.5–3.5 cm. long, 5–10-awned per pair, white hairy, loose with internodes 3.5–4.5 mm. long, strongly deflexed; raceme-bases unequal, the upper 3.5–8 mm. long, glabrous.. Homogamous pairs 1 at the base of both racemes.. Sessile spikelet 6–7 mm. long, white hirsute; callus pungent, 1.5–2 mm. long; awn 4–6 cm. long, pubescent with rufous hairs 0.4–0.6 mm. long.. Pedicelled spikelet villous, with or without an awnlet up to 4 mm. long.
False panicle up to 35 cm long, narrow, lax; spatheoles 4–7 cm long, linear, convolute; peduncle from 2/3 as long as to slightly longer than, the spatheole, pilose with white hairs above; racemes 1.5–3.5 cm long, 5–10-awned per pair, white-hirsute, strongly deflexed; internodes 3.5–4.5 mm long; raceme-bases unequal, the superior 3.5–8 mm long, terete, glabrous.
Sessile spikelets 6–7 mm long; callus 1.5–2 mm long, pungent; inferior glume lanceolate, brownish to dark violet, white-hirsute; awn 4–6 cm long, the column pubescent with rufous hairs 0.4–0.6 mm long.
Pedicelled spikelets 6–8 mm long, linear-lanceolate, villous, with or without a terminal awnlet up to 4 mm long; callus absent; pedicel-tooth c. 0.5 mm long, subulate.
Homogamous spikelets similar to the pedicelled spikelets, a single pair at the base of each raceme.
Leaf sheaths glabrous or sparsely pilose; leaf laminas up to 40 cm × 8 mm.
Caespitose perennial; culms up to 200 cm high.
