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(Last Modified On 9/18/2013)
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(Last Modified On 9/18/2013)
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Genus
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Uncaria Schreb.
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PlaceOfPublication
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Gen. P1. 1: 125. 1789.
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Note
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Nomen. cons. TYPE: U. guianensis (Aubl.) J. F. Gmelin.
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Synonym
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Ourouparia Aubl., Hist. P1. Guiane 1: 177. 1775. TYPE: 0. guianensis Aubl. Agylophora Neck., Elem. Bot. 1: 145. 1790. TYPE: not indicated. Uncinaria Reichbach, Nom. 230. 1840. TYPE: not given.
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Description
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Vines or sprawling shrubs, armed with recurved spines (aborted peduncles). Leaves opposite, the stipules interpetiolar. Inflorescences axillary and terminal, numerous, in globose heads. Flowers 5-merous, the hypanthium spindle shaped or turbinate, the calyx lobes valvate; corolla funnelform, pubescent outside, gla- brous within, the lobes 5, valvate; stamens 5, the anthers oblong, sagittate at the base, the filaments short, inserted at the mouth; ovary 2-celled, the style slender, the stigmas small, capitate, the ovules numerous, ascending, the ovarian disc obsolete. Fruits capsular, septicidally dehiscent, each valve splitting at the apex; seeds numerous, imbricate, winged, the wing frequently split.
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Habit
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Vines or sprawling shrubs
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Note
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a genus of about 60 species,
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Distribution
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occurs in the tropics of the Old and New Worlds. In the New World it occurs in Central America, Trinidad, and tropical South America.
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