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Culms tufted, erect or geniculately ascending, 8–50 cm tall. Leaf sheaths glabrous, compressed; leaf blades narrowly lanceolate, 7–20 × 0.3–1 cm, soft, adaxial surface tuberculate-pilose at base, tapering to a setaceous apex. Inflorescence subdigitate or racemes arranged along a central axis up to 15 cm; racemes mainly grouped in pseudo-whorls or pairs, 4–12 cm, ascending. Spikelets densely imbricate, oblong with serrate outline, 6–10 mm, florets 6–20, stramineous at maturity; glumes papery-membranous; lower glume narrowly oblong, 1.2–3 mm, apex acute, mucronate; upper glume lanceolate, 1.5–3 mm, acuminate, awn-pointed; lemmas broadly ovate, 2–3 mm, keel scabrid, shallowly concave above middle and excurrent into a stout 0.5–1 mm awn-point, lateral veins also fractionally excurrent. Grain blackish, rugose, surface finely granular. Fl. and fr. autumn. 2n = 36.
Flowering culms 20–60 (–100) cm high, 3–6-noded. Leaves: basal sheaths glabrous; ligule a ciliate membrane, 0.8–1.3 mm long; blade flat, 13–27 cm long, 3–12 mm wide. Inflorescences digitate or subdigitate or with branches whorled, 0–13 cm long; branches 2–20, 2–10 cm long, with pubescent axils. Spikelets biseriate, oblong, 5–10 (–12) mm long, 8–.16-flowered, with 6–15 bisexual florets, pale (with green nerves). Glumes thinly cartilaginous; lower glume linear to oblong; upper glume aristulate or awned. Basal lemma lanceolate to ovate, 2–3 mm long, cartilaginous, emarginate, glabrous, with awn 0.3–0.9 mm long. Palea lanceolate. Caryopsis 0.8–1.1 mm long, 0.4–0.6 mm wide, oblong to elliptic.
Spikelets 5.5–13 mm long; glumes unequal, the inferior 1.2–2.9 mm long, linear-oblong in profile, acute and mucronate at the apex, the superior 1.5–3 mm long, lanceolate in profile, acuminate and awned at the apex, the awn 1/3–2/3 as long as the body; lemmas 2.1–2.8 mm long, narrowly ovate in profile, the keel scabrid and shallowly concave above the middle, the mid-nerve excurrent into a stout awn-point 0.3–0.9 mm long.
Tufted annual 120-800 mm high; culms erect or geniculately ascending. Leaf blade 120-200 x 8-15 mm. Inflorescence with 5-10 spike-like secund racemes in 1-3 whorls. Spikelet 6-9 mm long, 10-15-flowered; glume and lemma extending into awns 1/3-2/3 their body lengths; lemma awn 0.3-0.9 mm long; anther up to 0.5 mm long.
Annual, tufted (culms erect or geniculately ascending), up to 0.8 m high. Leaf blades 120-200 mm long, 8-15 mm wide. Spikelets 6-9 mm long. Inflorescence with 5-10 spike-like racemes in 1-3 whorls; spikelets 10-15-flowered; glumes and lemmas extending into awns for a third to two-thirds of their length.
Racemes 1.5–10 cm long, ascending, mainly grouped in whorls of 2–5 and either clustered subdigitately towards the top of the culm or arranged along a central axis up to 15 cm long.
Caespitose annual; culms up to 75 cm tall, slender erect or geniculately ascending; leaf laminas 7–20 cm × 5–11.5 mm, soft, rounded at the base, tapering to a fine hair-like apex.
