Cyperus retrorsus Chapm.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Cyperaceae
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Scientific Name
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Description
Species Description - Perennial; stems very slender, smooth, 3–10 dm; lvs shorter than the stems, 3–5 mm wide; bracts 4–8, usually surpassing the infl; rays 5–9, to 10 cm; spikes short-cylindric, 6–25 × 6–12 mm; spikelets very numerous, crowded, radiating horizontally, 3–6 mm, 1–3-fld; scales thin, ovate, 2–2.5 mm, multinerved, obtuse or minutely mucronulate; achenes oblong-trigonous, 1–1.5 mm, a third to half as thick. Sandy barrens and coasts; s. N.Y. to Fla. and Tex., mostly on the coastal plain, n. in the interior to Ky. and Okla. (C. cylindricus, a preoccupied name; C. ovularis var. c.; C. torreyi)