Eleocharis tuberculosa (Michx.) Roem. & Schult.
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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 - Cespitose annual; stems flattened, 2–8 dm; spikelet ovoid, 5–15 mm, acute; scales firm, appressed, broadly rounded above, stramineous or dark; bristles usually exceeding the achene but shorter than the tubercle; style trifid; achene trigonous, broadly obovoid, 1.2–1.5 mm, tubercle obscurely trigonous to dome-shaped, obtuse or acute, attached by a narrow base, about as long and thick as the achene; 2n=30. Wet, especially sandy soil, chiefly near the coast; N.S. to Fla., Tenn., Tex., and Ark.