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Tufted perennial 600-1 300 mm high; rhizomatous; basal leaf sheaths glabrous or rarely with a few hairs. Leaf blade to 300 x to 3 mm. Raceme bases terete, unequal, upper raceme base 3.5-7.0 mm long, with 2 pairs of homogamous spikelets; raceme pairs with 4-7 awns. Sessile spikelet 5.5-7.0 mm long, hairs yellow or reddish-brown; awn 25-40 mm long; callus acute to pungent, 1-2 mm long. Pedicellate spikelet 4-7 mm long, yellow or reddish-brown hairs, awn up to 2 mm long; anther 1.4-2.0 mm long.
False panicle up to 30 cm long, lax and open; spatheoles 4–8 cm long, linear; peduncles about as long as the spatheoles, glabrous or with whitish or yellowish hairs towards the apex; racemes 1.5–2 cm long, 4–7-awned per pair, fulvously pilose, terminally exserted, not or tardily deflexed; raceme-bases unequal, the superior 3.5–7 mm long, terete, glabrous or rarely loosely and thinly pilose, the articulation with the peduncle glabrous.
Perennial, rhizomatous and tufted, up to 1.3 m high. Leaf blades up to 300 mm long, up to 3 mm wide. Spikelets (sessile) 5.5-7.0 mm long (with yellow or reddish-brown hairs; callus acute to pungent, 1-2 mm long). Raceme pairs with 4-7 awns 25-40 mm long; raceme bases terete, unequal, upper raceme base 3.5-7.0 mm long, with 2 pairs of homogamous spikelets.
Homogamous spikelets similar to the pedicelled spikelets, 1 or very rarely 2 pairs at the base of the inferior raceme and 2 (or sometimes only 1) at the base of the superior, the number usually variable within the same panicle.
Sessile spikelets 5.5–7 mm long; callus 1–2 mm long, acute to pungent; inferior glume narrowly lanceolate, pubescent with fulvous or yellow hairs; awn 2.5–4 cm long, the column rufously pubescent.
Pedicelled spikelets 4–7 mm long, narrowly lanceolate, usually with an awn-point up to 2 mm long at the apex; callus absent; pedicel-tooth up to 0.2 mm long, triangular.
Leaf sheaths glabrous or very rarely loosely pilose; leaf laminas up to 30 cm × 3 mm, rigid.
Perennial; culms up to 130 cm high.
Perennial, 0·6–1·5 m. high
