Rhynchospora corniculata (Lam.) A.Gray
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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 - Stout and leafy perennial to 2 m, with or without rhizomes; lvs commonly 8–20 mm wide; infl diffusely branched, to 2 dm wide, the glomerules short-spiciform, usually with 4–10 spreading or ascending spikelets 15–23 mm; bristles (3–)5(6), normally 2 equal ones on one side and a central one flanked by 2 shorter ones on the other side, all usually shorter than the achene, this flat, brown, obovate, 4–5.5 mm, the tubercle forming a beak 13–18 mm. Swamps and marshes; near to coast from Del. to Fla. and Tex., n. in the interior to s. Ind., s. Mo., and Okla.; W.I. Var. corniculata, of the e. seaboard, has the base of the beak half as wide as the top of the achene. Var. interior Fernald, of the Mississippi Valley, has the base of the beak nearly as wide as the top of the achene.