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Tufted perennial, the basal sheaths tomentose or glabrous below; culms 60–120 cm. high.. Leaf-blades up to 30 cm. long, 3 mm. wide.. False panicle diffuse or scanty, 15–30 cm. long; spatheoles narrowly lanceolate, 2.5–5 cm. long, the peduncles a little shorter; racemes 1.5–2 cm. long, 2–4-awned per pair, dark purple, deflexed; raceme-bases unequal, the upper 1.5–3(–4) mm. long, flattened below, stiffly yellow setose, the tip produced into a linear purple appendage 1–3 mm. long.. Homogamous pairs 1 at the base of the lower raceme only.. Sessile spikelet 6–10 mm. long, purplish; callus 1.5–2 mm. long, acute to pungent; awn 2.2–5.5 cm. long.. Pedicelled spikelet with an awnlet 1–5 mm. long, the pedicel-tip produced into a subulate tooth 0.2–1.5 mm. long.. Fig. 186.
False panicle 15–30 cm long, diffuse or scanty; spatheoles 2.5–5 cm long, narrowly lanceolate, glabrous or villous along the margins, rarely villous all over; peduncles a little shorter than the spatheoles, barbate all round above with stiff bulbous-based yellow hairs; racemes 1.5–2 cm long, 2–4-awned per pair, dark purple, laterally exserted and deflexed; raceme-bases unequal, the superior 1.5–3(4) mm long, flattened below, subterete above, barbate with stiff yellow or occasionally pallid hairs, produced at the apex into a linear, purple, entire or bidentate appendage 1–3 mm long.
Sessile spikelets 6–10 mm long; callus 1.5–2 mm long, acute to pungent; inferior glume linear-oblong, coriaceous, glabrous or sometimes pilose towards the apex, often pubescent or pilose all over, the midnerve raised between two fine longitudinal grooves; awn 2.2–5.5 cm long, the column pubescent.
Pedicelled spikelets 5–10 mm long, glabrous or sometimes pilose, terminating in a bristle 1–5 mm long; callus scarcely developed; pedicel-tooth 0.5–1.2 mm long, narrowly triangular or linear-oblong to subulate.
Leaf sheaths glabrous to thinly pilose, the basal tomentose or glabrous below; leaf laminas up to 30 cm × 3 mm, rigid, scabrid along the margins, glabrous or pubescent below.
Homogamous spikelets 5–10 mm long, a single pair at the base of the inferior raceme only, glabrous, awnless.
Densely caespitose perennial; culms up to 210 cm high, erect, glabrous.
Densely tufted, 60–120 cm. high
