Culms solitary or tufted, erect, 50–80 cm tall, 1.5–3 mm in diam., 1–5-noded, glabrous, but scabrous or pubescent below spike. Leaf sheath usually brown or purplish at base, smooth to densely pubescent; ligule 1–2 mm, membranous; leaf blade glaucous, flat or involute, 10–30 × 0.3–0.8 cm, abaxial surface smooth to puberulent, adaxial surface scabrous, puberulent, or sometimes pilose. Spike 5–14 × 0.6–1 cm; rachis scabrous or pubescent, margin ciliate. Spikelets 2 or 3 per node, 0.8–1.5 cm, with 2–6 florets. Glumes not covering base of first lemma, subulate, 5–11 mm, 1-veined, hirsutulous. Lemma lanceolate or broadly so, obscurely 5-veined, smooth, glabrous, but callus puberulent; first lemma 5–9 mm. Palea shorter than lemma, ciliate along keels. Anthers 3–4 mm. Fl. and fr. May–Aug. 2n = 42.
Alkaline meadows and saline soils, and as a weed in fields, roadsides, and around human habitations; at elevations from bottomlands to upland slopes.
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