Plants perennial, solitary or cespitose, 60–100 cm; rhizomes sometimes present, stoloniferous. Culms lax, leafy, mostly excurved, slender. Leaves shorter than culm; blades ascending, narrowly linear, proximally flat, 2–4(–5) mm wide, apex trigonous, short-subulate, tapering. Inflorescences: spikelet clusters 3–7(–10), dense, all but most distal widely spaced, broadly turbinate to ovate or hemispheric. Spikelets light red-brown, lanciform, 5 mm, apex acuminate; fertile scales lanceolate, 4–4.5 mm, apex acuminate, midrib excurrent as awn. Flowers: bristles 6, reaching past tubercle base, usually to or slightly past its tip, antrorsely barbellate. Fruits 2(–4) per spikelet; stipe and receptacle curled-setose, (0.5–)0.6–08(–1) mm; body glossy, brown with pale center, narrowly obovoid-lenticular, 1.2–1.5 mm, surfaces minutely striate, sometimes transversely minutely rugulose with wavy rows of dark minute dots; margins narrow, strong, flowing to tubercle; tubercle narrowly triangular, slightly concave-sided, flattened, setulose-ciliate, 0.7–1.1 mm.
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