Rhizomes 1 mm thick. Culms 7–15 cm, 2–2.5 mm thick at base. Leaves: sheaths to 1.5 cm, fronts uniformly colorless or pale brown; blades with conspicuous median groove, flattened dorsiventrally, elliptic in cross section, 6–15(–18) cm × 0.3–0.6 mm, lacking conspicuous air cavities. Inflorescences 0.7–1.5 cm × 6–8 mm, staminate portion less than 2 mm. Pistillate scales yellow-brown medially, 1-veined, equaling perigynia in length and width, apex acute, involute, appearing acuminate, awns absent. Anthers 1.5–2 mm. Perigynia veinless, sessile, elliptic, 3.5–5 × 1.5–2.5 mm, base rounded, apex acute; beak erose; rachilla longer than fruit. Stigma 1.5–2.5 mm. Achenes stalked to 0.2 mm.
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