Spikelets crowded in rather short, axillary spikes of mostly 7-10, distichous on the rachis; scales distichous, each subtending a perfect fl, their margins hyaline and decurrent on the eventually disarticulating rachilla as a hyaline wing; bristles 6-9, retrorsely barbed, exceeding the achene; stamens 3; style bifid; achene flattened, linear-oblong; tall, rhizomatous perennial sedges with subterete, hollow, jointed, leafy stems, numerous short blades and numerous short-peduncled spikes solitary in the upper axils. Monotypic.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.