Lax, rhizomatous, 25-35 cm tall, with narrow, folded leaves inrolled at margins; laminae persistent. Sheaths glabrous; ligule 1.5-2.5 mm long; lamina abaxially smooth, adaxially short-ciliate or scabrous, margins smooth, tip pointed. Panicle 6- 10 cm long, open, with few smooth branchlets tipped by few large greenish-brown spikelets 7- 9.5 mm long. Glumes 4-5.5 mm long, acute to acuminate, lower 1-nerved, upper 3-nerved. Lemma 5.5-6 mm long, 5-nerved, acute to acuminate, nerves ciliate below, scabrous above, internerves smooth, but scabrous near tip. Callus with hairtuft. Anthers 2-2.5 mm long, pollen-sterile; gynoecium 1-1.5 mm long, stigmas imperfect.

Grass 20-40 cm tall, laxly tufted, ± decumbent, with ± distinct to elongate slender rhizomes glabrous. Culms branched at base, branches mostly extravaginal, lower internodes shorter than leaf sheaths, peduncle exceeds leaf blades. Leaf sheath ± compressed, distinctly nerved, smooth. Leaf blade 10-20 em long, 2-3 mm wide when flat, flat or folded, linear, tip acute, smooth on abaxial side, ± scabrid on adaxial side. Ligule 1-1.5 mm long, obtuse, membranous ± entire. Panicle 5-10 cm long slender, nodding rachis and branchlets smooth, branchlets short. Spikelets shortly pedicellate to subsessile, 7-9 mm long, oblong-ovate, 4-6 flowered. Glumes narrow ovate-Ianceolate, acute, 3-nerved, keeled, 4, 5-5 mm long, subequal, ± scabrid on keels above. Lemma 5-6 mm long, broad-lanccolate, strongly acute, keeled, 5-nerved, nerves ± prominent, middle and outer nerves scabrid above, lanate below. Palea narrow, 2-nerved, nerves softly ciliate-dentate.

Gramen 20-40 cm altum, laxe eaespitosum, ± decumbens, rhizomatibus tenuis breviusculis vel elongatis, glabrum. Culmi ima basi divisi, rami plerumque extravaginales, internodia inferiora vaginis breviora, pedunculus laminis longior. Vagina ± compressa, distincte striata, laevis. Lamina 10-20 cm longa, plana vel plicata, 2-3 mm lata dum plana, linearis, apice acuto, infra glaba, supra ± scabrida. Ligula 1-1.5 mm longa, obtusa, membranacea, ± integra. Panicula 5-10 cm longa, gracilis, rachi nutante, ramulis glabris, brevibus. Spiculae breviter pedicellatae vel subsessiles, 7-9 mm longae, oblong-ovatae, 4--6 florae. Glumae angustae, ovato-Ianceolatae, acutae, trinerves, carinatae, 4.5-5 mm longae, subaequales, ad apicem carinae ± scabridae. Lemma 5-6 mm longum, late lanceolatum, peracutum, carinatum, quinquenerve, nervis ± distincts, mediis et lateralibus nervis supra scabrids, infra lanatis. Palea angusta, binervis, nervis leviter ciliato-dentatis.