Culms erect, (4.7–)7.1–14.4 cm, 1/5–2/5 of total plant height. Leaves: basal sheaths pale brown to dark brown; blades green, much exceeding culms, 1.2–4.6 mm wide, herbaceous, margins green, smooth or scabrous. Lateral spikes 0–2(–3), basal, on erect or spreading (rarely drooping) peduncles. Terminal spikes with staminate portion 7–56-flowered, (5.4–) 9.6–20.1 × 0.7–1.6 mm; pistillate portion spike 2–4(–6)-flowered. Pistillate scales green, margins hyaline, white, tinged reddish brown, (0.9–)1.2–2.4 mm wide, not more than 1.5 times as wide and not concealing perigynia, apex attenuate into green awns; distal scales with hyaline margins 0.3–0.8 mm wide, apex acuminate, awnless, or scabrous-awned to 5.7 mm. Staminate scales green or tinged with pale brown, ovate, 2.5–4.1 × 1.6–2 mm, margins free but enfolding scales above, hyaline, white, apex obtuse, erose. Anthers 1.1–1.4 mm. Perigynia (3–)4–9 per spike, pale green to pale brown, often speckled reddish brown, narrowly ovoid or lance-ovoid, (7–)7.5–8.9(–10.8) × 1.5–2.3 mm, tightly enveloping achenes, apex gradually tapering; beak (3.6–)4.1–5(–6.4) mm, scabrous. Stigmas filiform, flexuous, long, thin, strongly papillose. Achenes brown, oblong, (2.1–) 2.5–3.1(–3.3) × (1.4–)1.5–1.9(–2.1) mm.
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