(Last Modified On 11/1/2012)
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(Last Modified On 11/1/2012)
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Genus
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HETERANTHERA R. & P.
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PlaceOfPublication
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Fl. Peruv. Prodr. 9. 1794
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Reference
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Fl. Peruv. 1:43. 1798.
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Synonym
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Phrynium L6fl. Iter Hisp. 178. 1758, as syn. Schollera Schreb. Gen. 785. 1791. Heterandra Beauv. Trans. Amer. Phil. Soc. 4:175. 1799. Leptanthus Michx. Fl. Bor. Am. 1:24. 1803. Buchosia Vell. Fl. Flum. 33. 1825. Lunania Raf. Med. Fl. 2:106. 1830. Triexastema Raf. Fl. Tell. 4:121. 1838.
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Description
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Plants submerged or floating or of swampy places. Aerial leaves petiolate, expanded; submerged leaves, if present, grass-like. Inflorescence loosely spicate or with a solitary flower. Peduncle exserted from or ensheathed by the spathe. Perianth nearly regular, salverform, white or blue, the outer lobes narrower than the inner. Stamens 3, unequal, one with a much longer filament and larger anther. Ovary many-ovulate. Fruit capsular; seeds very numerous.
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Key
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a. Single flower (rarely 2) sub-ensheathed by the spathe; leaves usually dimorphic- ------------------------------------------- 1. H. LIMOSA aa. Flowers 2 or many; leaves monomorphic, not grass-like and submerged. b. Leaf blade reniform; inflorescence short-spicate, more or less en- sheathed by the spathe; no cleistogamous flowers - -- 2. H. RENIFORMIS bb. Leaf blade cordate, apex projected; inflorescence long-spicate, not ensheathed by the spathe; lower flowers cleistogamous -3. H. SPICATA
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