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Densely tufted, 2–6 dm, the stems surpassing the lvs; main lvs 2–4 mm wide; terminal spike staminate, 5–10 mm, sessile or short-peduncled; pistillate spikes 2–4, separate, erect, pedunculate, usually staminate at the tip, the axis to 1 cm; bracts lf-like, overtopping the spikes, strongly sheathing at base; pistillate scales ovate, 3–5 mm, hyaline with green midvein, acute to short-awned, persistent; perigynia slenderly subulate, 8–12 mm, nearly circular in cross-section, long-attenuate above, the beak with a long fissure and 2 conspicuous, abruptly reflexed teeth 1 mm; achene rounded-trigonous, continuous with the persistent slender style. Bogs, especially Chamaecyparis-swamps, mostly on the coastal plain; R.I. to Pa. and Ga.
