Densely cespitose, to 7 dm; lvs filiform or rarely to 2 mm wide; glomerules 2–4, broadly turbinate to hemispheric, the terminal one 8–15 mm thick, the lateral remote, subsessile to short-peduncled, somewhat surpassed by their bracts; spikelets 3–4 mm, dark brown, with 3–6 fls and 1–4 frs; bristles 6, 1.2–1.7 mm, antrorsely barbellate; achenes obovate, 0.9–1.3 mm, two-thirds as wide, pale brown toward the margin, lustrous and nearly white at the center; tubercle deltoid, half as long as the achene. Pine-barren bogs on the coastal plain; N.J. to Fla. and Tex.; Cuba and C. Amer.