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Information Perennial, arising from a short oblique rhizome; culms 30–100 cm. high. Leaf-blades narrow, often rolled, 4–25 cm. long, 2–4 mm. wide. Panicle broadly ovate, 7–25 cm. long, loose to moderately dense with the spikelets uniformly distributed. Spikelets 9–40-flowered, narrowly oblong, 5–20 mm. long and 2–3(–3.5) mm. wide, the opposite rows of florets not overlapping, leaving the rhachilla partly visible, greyish green to dark green, breaking up from the base, the rhachilla persistent; glumes subequal, narrowly ovate, 1.2–2 mm. long, acute; lemmas broadly ovate and acute to subacute when flattened, 1.7–2.5 mm. long, minutely asperulous; palea falling soon after the lemma, the keels scaberulous; anthers 3, 0.7–1 mm. long. Caryopsis narrowly ellipsoid, 0.7–1 mm. long. Fig. 61/4, p. 193.

Information Tufted perennial without rhizome; culms 30–100 cm. high. Leaf-blades flat or rolled, mostly 15–30 cm. long and 2–4 mm. wide. Panicle ovate or oblong, 4–40 cm. long, the spikelets loosely contracted about the obliquely ascending primary branches. Spikelets 6–50-flowered, narrowly oblong, 3–20 mm. long, 1.5–2.5 mm. wide, the opposite rows of florets not overlapping, leaving the rhachilla partly visible, typically grey-green but varying from yellowish to dark green and often tinged with purple, breaking up from the base, the rhachilla persistent; glumes subequal, ovate-elliptic, 0.8–1.7 mm. long, acute; lemmas broadly ovate and acute to subacute when flattened, 1.4–2 mm. long, minutely asperulous; palea falling soon after the lemma, the keels scaberulous; anthers 3,0.5–1 mm. long. Caryopsis ellipsoid, 0.7 mm. long.

Information Robust, densely caespitose perennial without rhizomes or stolons; culms stout, up to 200 cm tall, erect, branched, glabrous at the nodes, eglandular; basal leaf sheaths glabrous, thinly chartaceous, terete, eglandular, persistent; ligule a line of hairs; leaf laminas up to 30 cm × 4(5) mm, linear, involute, glabrous or ciliate below, eglandular.Panicle (15)20–30 cm long, narrowly elliptic to narrowly oblong (rarely ovate), open, the spikelets clustered along the distal half of the primary branches on pedicels 1–2.5 mm long, the primary branches not in whorls, terminating in a fertile spikelet, glabrous in the axils, eglandular.Spikelets 5.5–13 × 1.8–2 mm, narrowly oblong to oblong, laterally compressed, 12–25-flowered, the florets disarticulating from below upwards, the rhachilla persistent; glumes unequal, reaching to just beyond the middle of the adjacent lemmas, keeled, lanceolate in profile, glabrous, acute at the apex, the inferior 0.8–1.3 mm long, the superior 1.2–1.6 mm long; lemmas 1.7–2.2 mm long, keeled, narrowly elliptic to narrowly ovate in profile, membranous with distinct lateral nerves, diverging from the rhachilla at c. 45°, those in opposite rows not imbricate and the rhachilla visible between them, dark olive-green, glabrous, subacute at the apex; palea deciduous with the lemma, glabrous on the flanks, the keels slender, wingless, scaberulous; anthers 3, 0.9–1.1 mm long.Caryopsis 0.7–1 mm long, narrowly elliptic to linear.

Information Caespitose perennial with short oblique rhizome; culms slender, up to 100 cm tall, erect, unbranched, glabrous at the nodes, eglandular; basal leaf sheaths glabrous, chartaceous, usually compressed, eglandular, persistent; ligule a line of hairs; leaf laminas 4–25 cm × 2–4 mm, linear, usually involute, glabrous, eglandular.Panicle 7–25 cm long, broadly ovate, loose to moderately dense, the spikelets evenly distributed on pedicels 2–4 mm long, the primary branches not in whorls, terminating in a fertile spikelet, glabrous in the axils, eglandular.Spikelets 5–20 × 2–3(3.5) mm, narrowly oblong, laterally compressed, 9–40-flowered, the florets disarticulating from below upwards, the rhachilla persistent; glumes subequal, 1.2–2 mm long, reaching to between 2/3 and 3/4 the way along the adjacent lemmas, keeled, lanceolate in profile, glabrous, acute at the apex; lemmas 1.7–2.5 mm long, keeled, ovate in profile, membranous with distinct lateral nerves, diverging from the rhachilla at c. 45°, those in opposite rows not imbricate, the rhachilla visible between them, greyish-green to dark green, minutely asperulous, acute or subacute at the apex; palea deciduous with or soon after the lemma, glabrous on the flanks, the keels slender, wingless, scaberulous; anthers 3, 0.7–1 mm long.Caryopsis 0.7–1 mm long, narrowly elliptic.

Information Perennial, tufted or arising from a short oblique rhizome; culms 60–100 cm. high. Leaf-blades flat or rolled, up to 25 cm. long and 2–4 mm. wide. Panicle ovate-elliptic, 6–20 cm. long, usually loose. Spikelets 9–24-flowered, broadly ovate to ovate-oblong, 4–12 mm. long, (3–)3.5–5.5 mm. wide, the opposite rows of florets not overlapping and the rhachilla ± exposed, greyish green, breaking up from the base, the rhachilla persistent; glumes subequal, lanceolate, 1.5–3 mm. long; lemmas ovate-elliptic and acute when flattened, (2–)2.5–3 mm. long; palea falling soon after the lemma, the keels scaberulous; anthers 3, 1–1.5 mm. long. Caryopsis ellipsoid, 1 mm. long. Fig. 61/5, p. 193.