Rather small, slender extravaginal tufts, leaves « culms. Leaf-sheath dull or light brown, glabrous or minutely scabrid below collar, or lowermost sheaths scabrid throughout, sometimes with scattered hairs. Ligule 0.1-0.5 mm, membranous, truncate, ciliate, abaxially minutely scabrid. Leaf-blade to 15 cm × 1-2.5 mm, flat, tapered; margins minutely scabrid towards tip, occasionally both, or only adaxial, surface with short hairs, adaxially ribs scabrid. Culm 25-70 cm, internodes entirely glabrous, or slightly and minutely scabrid below purplish nodes. Panicle 10-30 cm, lax; branches few, slender, in ± distant whorls, naked below; rachis, branchlets and pedicels short-scabrid, visible between spikelets. Spikelets purple, few. Glumes elliptic-lanceolate, acute; lower (2.5)-3-3.5-(4.5) mm, < lemma, upper (3.5)-4-5-(5.5) mm, ≤ or rarely > lemma. Lemma 4-6 mm, minutely scabrid, tip shortly bifid; awn 13.5-18.5 mm, purple, inserted c. 0.5 mm below lemma tip, column ± straight, awn twisting 2-3 times. Palea 3.5-4 mm, narrow-linear, keels scabrid near ciliate tip. Callus hairs (0.5)-c. 1 mm. Rachilla prolongation to 0.2 mm. Lodicules 0.4-0.7 mm, cuneate, somewhat bilobed with a few apical hairs. Anthers 3, (0.9)-1.0-1.5-(2.5) mm in chasmogamous flowers, (0.1)-0.2-0.7 mm in cleistogamous flowers. Caryopsis 2-2.5 × 0.3-0.4 mm; embryo 0.2-0.4 mm; hilum 1.8-2.3 mm.
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Culms erect, 40–135 cm long. Leaves: ligule 0.1–0.5 mm long, ciliolate; blade 2–28.5 cm long, 1–2.5 (–4) mm wide. Inflorescence open, ovate, 6–21 cm long, 4–8 cm wide; branches naked at base. Spikelets lanceolate, 4.7–6.8 mm long, with or without rachilla extension. Callus 0.2–2.1 mm long, pubescent; hairs 1 mm long. Glumes unequal, membranous, shorter than or as long as lemma; lower glume 2.7–4.5 mm long, acute or acuminate and muticous; upper glume 3.5–5.5 mm long, acute or acuminate. Lemma lanceolate, 4–6 mm long; awn arising 0.6–0.9 mm below apex, 15–20 mm long overall, curved (at junction with bristle), twisted (with only 1 or 2 twists) or not twisted. Palea 3.5–4 mm long. Anthers 3, 0.5–1.5 (–2.5) mm long. Caryopsis 3–3.4 mm long.
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