Plants not cespitose. Culms obtusely or acutely angled, 25–130 cm, glabrous. Leaves: basal sheaths red-brown; sheaths of proximal leaves glabrous, fronts lacking spots and veins, apex U-shaped; blades hypostomic, 3–8 mm wide, abaxially papillose. Proximal bract longer than inflorescence, 3–6 mm wide. Spikes usually pendent; staminate 2–3; pistillate 2–4; proximal pistillate spike 1.8–5 cm × 5–7 mm, base obtuse. Pistillate scales red-brown to dark purple-brown, longer than perigynia, apex acuminate, awnless. Perigynia divergent, yellow-brown with pale brown spots on apical 1/2, 5–7-veined on each face, somewhat inflated, loosely enclosing achenes, 2.5–3.5 × 1.6–2.5 mm, leathery, dull, base with stipe to 0.5 mm, apex obtuse or rounded, papillose; beak thickened, 0.1–0.3 mm. Achenes constricted on 1 or both margins, apex rounded; style base straight. 2n = 68, 70, 72.
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