(Last Modified On 1/28/2013)
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(Last Modified On 1/28/2013)
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Genus
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BOERHAVIA L.
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PlaceOfPublication
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Sp. P1. 3. 1753.
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Synonym
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Boheravia Parodi, in Anal. Soc. Cient. Argent. 5:210. 1878. Boerhaavia auct.
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Description
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Annual or perennial herbs. Leaves opposite or subopposite, petiolate, frequently unequal at the nodes, the blade undulate or sinuate, conspicuously raphidulous. Inflorescence terminal, paniculiform to racemiform, many-flowered. Flowers small, perfect, subtended by 1-3 minute bracteoles, the perianth tube persistent, more or less herbaceous, frequently glandular, the perianth limb deciduous, petalaceous, obscurely 5-lobed; stamens 1-5, included or exserted; ovary shortly stipitate, the stigma capitate, more or less exserted. Anthocarp obpyramidal to obovoid or subellipsoid, glabrous to glandular, 3- to 5-angulate.
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Habit
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herbs
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Distribution
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Numerous species in the tropics and subtropics of both hemispheres.
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Note
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Both species in Panama are weeds and possibly not indigenous.
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Key
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a. Annuals; stems erect or ascending, glabrous or essentially so; leaves reddish-punctate beneath; inflorescences not leafy, the flowers in 2- to 3-flowered dichasia, distinctly pedicellate; anthocarps obpyramidal, truncate, glabrous, conspicuously pedicellate .. ................................. 1. B. ERECTA aa. Perennials; stems decumbent, more or less glabrous; leaves not punctate beneath; inflorescences leafy-bracted, the flowers in small glomerulate clusters, sessile or subsessile; anthocarps obovoid to subellipsoid, obtuse or somewhat beaked, glandular, sessile or subsessile ................................... 2. B. DIFFUSA
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