Annual. Culms moderately robust, erect or geniculate at base, ca. 1 m tall. Leaf sheaths glabrous or with tubercle-based bristles at mouth; leaf blades flat or folded, up to 30 × 0.3–0.9 cm, glabrous, abruptly acute to acuminate; ligule ca. 3 mm. Compound panicle large, dense; spathes and spatheoles lanceolate-caudate, glabrous, innermost 1.3–1.7 cm. Raceme composed of a triad of 1 sessile and 2 pedicelled spikelets above the involucre of 2 homogamous pairs. Homogamous spikelets all sessile, arising at same level, barren, both glumes present, 4.5–6 mm, lanceolate, stiffly setose in upper half with 3–4 mm, tubercle-based bristles. Sessile spikelet 4–4.5 mm; callus 0.8–1 mm, subacute, brown bearded; lower glume dorsally rounded, dark brown at maturity, pubescent, often thinly or glabrous on lower back; awn 3.5–4 cm. Pedicelled spikelet 4–6 mm, barren. Fl. and fr. Jun–Dec.
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