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(Last Modified On 1/10/2013)
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(Last Modified On 1/10/2013)
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Genus
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RHYNCHANTHERA DC.
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PlaceOfPublication
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Prod. 3:106. 1828.
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Description
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Flowers 5-merous. Hypanthium ovoid to subglobose or campanulate, pubes- cent. Sepals erect or spreading, lanceolate to linear, often exceeding the hypan- thium. Petals conspicuous, obovate. Fertile stamens 5, episepalous; filaments glabrous, usually stout, somewhat flattened; anthers subulate, rounded at base, prolonged distally into a slender one-pored beak; connective slender, greatly prolonged below the thecae, straight or arcuate, bituberculate, bicalcarate, or rarely unappendaged at base. Sterile stamens 5, opposite the petals, reduced to slender filaments, or lacking. Ovary free, 3- to 5-celled, glabrous, or distally setose or glandular; style elongate, filiform, declined or somewhat sigmoid; stigma puncti- form. Capsule thickly ovoid or subglobose; seeds ovoid to oblong, straight or nearly so, minutely foveolate. Herbaceous or partly woody plants, usually densely pubescent or pilose and often glandular; flowers large, in numerous few-flowered cymes forming a terminal leafy panicle.
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Distribution
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About 50 species, the others all in tropical South America, extending as far as Paraguay.
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Key
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a. Stamens all equal or approximately equal in length; hairs of the hypan- thium 1.5 to 2 mm. long .--------------------------------------------------------- 1 . R . PALUDICOLA. aa. Stamens unequal in length, the connective of one greatly prolonged; hairs of the hypanthium 0.5 mm. long or shorter. -2. R. MEXICANA.
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