Stems solitary or few together from long slender rhizomes, 1–4 dm, aphyllopodic; main lvs 1–2 mm wide, shorter than the culm; spike 1, bractless, to 1 cm; staminate scales closely infolded into a slender terminal cone; pistillate scales lanceolate, 4–6 mm, pale brown, soon deciduous; perigynia few, mostly 1–6, soon deflexed, deciduous at maturity, light green, becoming stramineous or pale brown, finely several-nerved, 6–7.5 mm, slender and long-tapering, spongy at base, nearly round in section; achene trigonous, not filling the perigynium, continuous with the exserted, persistent style; rachilla obsolete; 2n=46, 76. Sphagnum-bogs; circumboreal, s. to Conn., Pa., W.Va., Mich., Minn., and Wash.