Cyperus schweinitzii Torr.

  • Authority

    Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

  • Family


  • Scientific Name

    Cyperus schweinitzii Torr.

  • Description

    Species Description - Perennial from short, knotty rhizomes; stems 1–10 dm, scabrous above on the sides and sharp angles, 1–2.5 mm thick below the infl; lvs basally disposed, 2–8 mm wide, scabrous on the margins; bracts 3–8, strongly ascending, usually much longer than the infl; sessile spike obconic to oblong; rays 1–8, rarely over 10 cm; spikelets 5–15 in the sessile spike, fewer in the reduced ones, all crowded, ascending, flattened, 5–25 × 3–4.5 mm, 5–18-fld; scales broadly ovate-elliptic to rotund, the body 2.5–3.5 mm, in half-view nearly or fully as wide as long, multinerved, with a conspicuous mucro 0.5–1 mm; rachilla wingless or nearly so; anthers 0.6–1 mm; achenes dark, trigonously oblong with plane or only slightly concave faces, 2–3 mm, half as thick; 2n=ca 166. Sandy soil; Mass. and Que. to Minn., s. and w. to N.J., O., Mo., Utah, N.M., and adj. Mex.