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(Last Modified On 1/30/2013)
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(Last Modified On 1/30/2013)
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Genus
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APEIBA Aubl.
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PlaceOfPublication
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Hist. P1. Gui. Fr. 537. 1775.
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Synonym
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Aubletia Schreb. in L., Gen. PI. ed.8, 353. 1789. Oxytandrum Neck., Elem. Bot. 2: 255. 1790.
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Description
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Trees or tall shrubs, the pubescence of stellate hairs or fimbrillate lepidotes. Leaves alternate, petiolate, the stipules rapidly or tardily deciduous, the blade with entire or serrulate margins, 3- to 5(-7)-palminerved. Inflorescences oppositifolious or terminal, paniculate. Flowers hermaphrodite, actinornorphous, pedicellate, brac- teolate; calyx valvate, the sepals 4-5, free or sometimes very slightly connate at the base, deciduous; petals 4-5, free, imbricate, glandless; stamens numerous, free or usually connate into a short staminal tube, the filaments short; anthers 2-thecate, introrse, basifixus, erect, longitudinally dehiscent, with a sterile membranous appendage of the connective at the top; ovary superior, sessile, (8-)1.0- to many- celled, the cells many-ovulate; style simple; stigma minutely denticulate. Capsules ligneous, transversely elliptic, densely to coarsely bristly or spinose, opening at the top by woody teeth or by a nearly circular hole; seeds numerous, small, embedded in a lustrous pulp, the testa thin-coriaceous; albumen carnose; embryo straight; cotyledons orbicular-cordate.
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Distribution
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A neotropical genus of seven species of which two occur in Central America and in Panama.
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Key
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a. Leaves more or less rugose and sparsely stellate-puberulous above, densely stellate-arachnoid beneath; appendage of the anthers ca. 1 mm. long; capsule transversely elliptic, ca. 4 cm. long and 7-8 cm. broad, covered with long flexible and stout hirsute bristles 1. A. TIBOURBOU aa. Leaves scatteringly and minutely stellate-puberulous to glabrate above, densely and very minutely fimbrillate-lepidote and generally with tufts of brownish hairs in the axils of the secondary nerves beneath; appendage of the anthers ca. 4-4.5 mm. long; capsule transversely narrow-elliptic, ca. 1.5 cm. long and 5.5-6.5 cm. broad, covered with short to rather long, stout, conic-based, mi- nutely puberulous to glabrate spines 2. A. MEMBRANACEA
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