Culms 6–60 cm high. Leaf blade 1.6–14.5 cm long, 0.4–0.9 mm wide, with nerves equally prominent. Inflorescences appearing symmetrical, fully exserted, 1.5–12 cm long. Spikelets 6.8–12 mm long, disarticulating above glumes, with 4–9 bisexual florets and 2 or 3 distal incomplete florets; rachilla sparsely scabrous. Glumes: lower glume 1–2.6 mm long, slightly keeled, 1-nerved; upper glume 3.8–6.4 mm long, sometimes shortly awned, keeled at apex, hyaline at margins (particularly at apex), prominently 3-nerved. Callus blunt, 0.2 mm long. Basal lemma 4.7–6 mm long, awned, dorsally rounded, occasionally pigmented; nerves 5, obscure, papillose to scabrous on all nerves towards apex; intercostal regions glabrous to scabrous usually toward apex (in distal florets more scabrous than in proximal florets); awn 5.3–12 mm long. Palea shortly bifid. Stamen 1. Hilum 1.6–2.1 mm long.
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