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Spikelets 5–10 × 2.5–4 mm, elliptic-oblong, laterally compressed, 8–14-flowered, the lemmas disarticulating from below upwards, the rhachilla persistent; glumes subequal, 1.4–1.6 mm long, reaching to between 2/3 and 3/4 the way along the adjacent lemmas, keeled, lanceolate in profile, scaberulous on the keel, acute at the apex; lemmas 1.8–2.1 mm long, keeled, elliptic-ovate in profile, membranous with indistinct lateral nerves, diverging from the rhachilla at less than 45°, those in opposite rows imbricate and concealing the rhachilla, olive-green to leaden-grey, scaberulous on the keel, subacute at the apex; palea persistent, glabrous on the flanks, the keels slender, wingless, minutely ciliolate; anthers 3, 1–1.2 mm long.
Densely caespitose perennial without rhizomes or stolons; culms up to 70 cm tall, erect, unbranched, glabrous at the nodes, with an annular glandular patch below the nodes and punctate or crateriform glands on the internodes; basal leaf sheaths densely and shortly pilose to glabrescent below, chartaceous, terete or lightly compressed, eglandular, persistent; ligule a line of hairs; leaf laminas 5–14 cm × 0.5–2(4.5) mm, involute and ± filiform or flat and narrowly linear, glabrous to densely pilose, eglandular.
Panicle 10–22(30) cm long, ovate-oblong or elliptic, open with stiff branches, the spikelets evenly distributed on pedicels 2–5 mm long, the primary branches not in whorls, terminating in a fertile spikelet, glabrous in the axils, the axis, primary branches, branchlets and pedicels with punctate or crateriform glands, the branchlets and pedicels also with annular glands.
Caryopsis 0.8–1 mm long, oblong.
