Carex schweinitzii Schwein.
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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 - Stems 3–7 dm, aphyllopodic, sharply triangular, arising singly or few together from slender rhizomes; lvs septate-nodulose, mostly 4–10 mm wide, very rough distally; terminal spike staminate, slender-pedunculate, usually with a conspicuous bract or smaller sessile spike some distance below, the scales acute or cuspidate; pistillate spikes 2–5, approximate or the lowest widely separate, cylindric, 3–8 × 1–1.5 cm, the lowest spreading or ascending and distinctly peduncled, the upper ascending to erect, short-peduncled to subsessile; lower bracts lf-like, ± strongly sheathing at base, much surpassing the infl; pistillate scales with small, entire, hyaline or brown-tinged body, the midvein excurrent into a rough awn often equaling or surpassing the perigynium; perigynia spreading or ascending, 5.5–7.2 mm, substipitate, ovoid, inflated, with 7–9 slender nerves, abruptly narrowed to a slender beak with erect or spreading teeth 0.4–1 mm; achene loosely enveloped, concavely trigonous, with a persistent flexuous style. Cool, shady streambanks; rare; Vt. to n. Mich., s. to N.J., N.C., Tenn., and Mo.