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(Last Modified On 11/1/2012)
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(Last Modified On 11/1/2012)
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Species
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HETERANTHERA LIMOSA (SW.) Willd.
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PlaceOfPublication
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Ges. Nat. Freunde Berlin 3:439. 1801.
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Synonym
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Pontederia limosa Sw. Prodr. 57. 1788. Leptanthus ovalis Michx. Fl. Bor. Am. 1:25. 1803. Heteranthera alismoides Link, Jahrb. Gewachsk. 13:73. 1820. Lunania uniflora Raf. Med. Fl. 2:106. 1830. Triexastema uniflora Raf. Fl. Tell. 4:121. 1838. Schollera limosa (Sw.) 0. Ktze. Rev. Gen. 2:719. 1891. Phrynium limosum (Sw.) 0. Ktze. loc. cit. 33:318. 1898.
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Description
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Rooted plant, sometimes with creeping stems. Leaves usually dimorphic, the sub- merged linear and grass-like, the aerial with more or less expanded blade lanceolate to oblong, often narrowly so, 1-5 cm. long, base short-cuneate, rounded or shallowly cordate; petiole elongate, stipulate. Spathe sub-ensheathing the inflorescence, caudate, 1.5-4.0 cm. long. Inflorescence of a single flower; flower 2-6 cm. long, tube 1-4 cm. long, blue or whitish; anthers lanceolate, bi- lobed, almost basifixed; filaments glabrous, adnate to the perianth tube; style elongate, slightly longer than the tube, and with an expanded, tufted stigma. Ovary 1-celled, many-ovulate; capsule oblong, narrow, 1-2 cm. long; seed about 0.4 x 0.8 mm., brown, about 10-ridged longitudinally, one ridge enlarged; seed-coat striated horizontally.
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Distribution
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United States to Argentina.
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Specimen
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COCLE: pools and their margins in wet llanos between Aguadulce and Anton, Wood- son, Allen & Seibert I22I. HERRERA: Pese, Allen 809. PANAMA: in pond, vicinity of Bejuco, Woodson, Allen & Seibert I687; between Panama and Chepo, Dodge, Hunter, Steyermark. & Allen I6720.
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