Carex chordorrhiza L.f.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Old stems much elongate, prostrate, clothed with parts of the old lvs; fertile stems 1–3 dm, with 1–3 lvs near the base, their blades 1–5 cm; sterile stems with several much longer lvs; lf-blades 1–2 mm wide; head 5–12 cm, crowded; spikes 3–8, androgynous; scales broadly ovate, about equaling the perigynia, these 1–5, plump, oblong-ovoid, 2.5–3.5 mm, nearly as thick as wide, strongly many-nerved, obscurely margined, the beak emarginate, a fourth as long as the body; achene thick-lenticular; 2n=62. Sphagnum-bogs; circumboreal, s. to Mass., N.Y., Ind., Io., and Mont.