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(Last Modified On 10/15/2013)
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(Last Modified On 10/15/2013)
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Genus
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Pterandra Juss.
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PlaceOfPublication
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Malpigh. Synopsis (Ann. Sci. Nat., Bot. Ser. 2. 13:) 328. 1840.
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Note
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TYPE: Pterandra pyroidea Juss.
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Description
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Shrubs or trees. Leaves opposite, coriaceous; stipules intraxillary, completely united or only connate at the base. Inflorescences axillary-subterminal, forming umbelliform fascicles; pedicels sessile; sepals ovate-oblong, pilose on outside; calycine glands usually 10, sometimes 6 or 7 or lacking; petals white or pink, the limb obovate-orbicular or rounded with the margin subentire or variously fes- tooned, villose abaxially, the claw broad and villose; filaments briefly united and hirsutulous at the base; anthers ellipsoid to ovoid, glabrous, the thecae oblong with a narrow lateral wing externally, the connective thickened, enlarged at the apex and surpassing the thecae; ovary lanuginous to hirsute, tricoccoid, deeply sunken at the apex, trilocular, triovular; styles 3, affixed at the base of ovarian depression, subulate, glabrous; torus lanuginous. Fruits tricoccoid with the cocci subspherical, indehiscent, the pericarp thin, coriaceous and rigid.
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Habit
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Shrubs or trees.
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Distribution
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Pterandra is a neotropical genus of 6 species, more than half of which occur in the Amazon basin (in the broadest sense) from Venezuela to Brazil. One species occurs on the Pacific slope of Colombia and another in the isthmus of Panama.
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