Culms often spreading or declining, 3–30 cm × 0.5–1 mm. Leaves: apex of distal leaf sheath obtuse, tooth to 0.2(–0.5) mm. Spikelets ellipsoid to ovoid, 3–10 × 2–4 mm, apex blunt to subacute; floral scales 10–100+, 10 per mm of rachilla, colorless to pale brownish except for green midrib, 1.5–2 × 1 mm, midribs not keeled, apex rounded. Flowers: perianth bristles absent or 2–4, stramineous or whitish, shorter than to nearly 1/2 achene, very slender, without spinules; stamens 2(–3); anthers 0.3–0.5 mm; styles 2-fid or some 3-fid. Achenes 0.75–1 × 0.6–0.8 mm. Tubercles deltoid, 0.2–0.3 × 0.35–0.45(–0.55) mm, 1/2–3/4 as high as wide, 1/4–1/3 as high and 1/2–2/3(–4/5) as wide as achene.
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