Plants perennial, densely cespitose, 10–20 cm; rhizomes slender, short. Culms lax, filiform, leafy. Leaves spreading to ascending, exceeding or exceeded by culm; blades 0.2–0.3 mm wide, margins strongly involute or channeled, apex trig-onous, tapering, setaceous. Inflorescences: cluster of cymes 1–2, widely spaced, turbinate, sparse; branches few; foliaceous bracts setaceous, longer than cymes. Spikelets brown, lance ovoid to fusiform, 2.5–3 mm, apex acuminate; fertile scales ovate, 1.5 mm, apex acute, midrib short excurrent. Flowers: perianth absent. Fruits 0.9–1 mm; body lustrous pale brown, ellipsoid lenticular, 0.8–0.9 × 0.5–0.6 mm, margins narrow, wirelike; surfaces minutely reticulate; bristles 4–6, the longest from shorter than fruit midbody to fully as long, rarely reaching tubercle tip, minutely antrorsely barbellate; tubercle short conic, to 0.15 mm.
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