Eleocharis melanocarpa Torr.
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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 - Densely cespitose perennial; stems 2–6 dm, wiry, flattened, sometimes proliferous at the tip; sheaths truncate and prominently mucronulate; spikelet narrowly ovoid, 6–15 mm, obtuse, many-fld; scales firm, obtuse; bristles short or vestigial; anthers ca 1.3–2 mm; achene obpyramidal, trigonous with rounded angles, dark brown, 1 mm, truncate above; tubercle very flat, covering the summit of the achene and somewhat projecting at the margin, slightly elevated in the middle. Wet sand and pine- barrens, mostly near the coast; Mass. to Fla. and Tex., and inland in Mich. and Ind.