Culms arcuate or slightly sinuous, 10–35 cm. Leaves of flowering stems shorter than to equaling culms, 1.4–4.6 mm wide, ligules of distal cauline leaves usually obsolete. Inflorescences: peduncles of terminal staminate spikes (1–)3–28 mm; proximal pistillate spikes (1–)2–5, approximate, the proximal usually distant and pedunculate, elliptic, 5.3–8.5 mm wide; terminal staminate spikes pedunculate, 9–23.8 × 1.3–3.3 mm. Perigynia dark olive to green, (2.7–)3.2–3.8(–4.2) × 1.1–1.7 mm wide, apex gradually contracted into a smooth or slightly scabrous, straight or slightly curved (less than 28°) beak; beak 0.7–1.7 mm. Achenes 1.1–1.5 × 0.9–1.2 mm.
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