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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 RENIFORMIS R. & P.
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PlaceOfPublication
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Fl. Peruv. 1:43. 1798.
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Synonym
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Heterandra reniformis (R. & P.) Beauv. Trans. Amer. Phil. Soc. 4:175. 1799. Heteranthera acuta Willd. Ges. Nat. Freunde Berlin 3:438. 1801. Leptanthus renifor-mis (R. & P.) Michx. Fl. Bor. Am. 1:25. 1803. Leptanthus virginicus Pers. Syn. P1. 1:56. 1805. Leptanthus peruvianus Pers. loc. cit. 1805. Heteranthera acuta (Willd.) Vahl, Enum. P1. 2:42. 1805. Buchosia aquatica Vell. Fl. Flum. 33. 1825. Heteranthera *irginica (Pers.) Steud. Nomencl. Bot. ed. 2, 2:29. 1841, as syn. Schollera reniformis (R. & P.) 0. Ktze. Rev. Gen. 2:719. 1891. Phrynium reniforme (R. & P.) 0. Ktze. Rev. Gen. 33:318. 1898.
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Description
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Plants rooted, with elongate creeping stems. Leaves monomorphic with ex- panded reniform blade as large as 3 cm. long and 5 cm. broad; petiole extended. Spathe loosely ensheathing, caudate, 1-3 cm. long. Inflorescence short-spicate, 1-5 cm. long, 2- to 6-flowered. Flowers white or lavender, less than 2 cm. long, the tube less than 1 cm. long, usually about 0.7 cm. long; perianth lobes spread- ing, glandular-pubescent without; anterior sepal reflexed, very narrow; posterior petal somewhat expanded, green at base; stamens dimorphic, anterior longer, about 4 mm. long, posterior ones shorter, about 2 mm. long; larger anther oblong, green, about 1.5 mm. long, smaller ones globular, yellow, basifixed, about 0.5 mm. long; filaments dilated at their base, adnate to the perianth tube; style longer than the tube, about 7 mm. long above the ovary, with an expanded brush- like stigma facing upward and inward. Capsule about 1 cm. long; seed columnar, longitudinally ridged, 0.5-0.8 mm. long, 0.3-0.5 mm. broad.
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Distribution
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United States to Argentina.
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Specimen
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CANAL ZONE: Summit, Woodson d Schery I022. CHIRIQUI: swamps in pasture, Boquete, alt. 3800 ft., Davidson 57I. COcLE: bogs, El Valle de Anton, alt. 500-700 m., Seibert 446; between Las Margaritas and El Valle, Woodson, Allen & Seibert I752; lower Rio Anton, Allen i05. BOCAS DEL TORO: Water Valley, von Wedel 1501. PANAMA: pool in savanna between Panama' and Chepo, Dodge, Hunter, Steyer-mark & Allen 167I4.
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