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2. Bougainvillea Commerson ex Jussieu, Gen. Pl. 91. 1789.
[nom. et orth. cons.]
叶子花属 ye zi hua shu
Shrubs or small trees, sometimes climbing. Branches spiny. Leaves alternate, petiolate, leaf blade ovate or elliptic-lanceolate. Inflorescences axillary, pedunculate, 3-flowered cymes, each flower subtended by a persistent, often brightly colored, ovate bract adnate to the pedicel, often grouped into terminal panicles. Flowers bisexual; pedicel adnate to the midvein or the bract. Perianth connate, limb rose or yellow, funnelform, 5-6-lobed, lobes short. Stamens 5-10, included; filaments shortly united at base. Ovary fusiform, stipitate. Style lateral, short linear; stigma fimbriate. Fruit cylindric or clavate, 5-ribbed, without sticky glands. Seed: testa thin; embryo curved, cotyledons convolute, enclosing the endosperm.
About 18 species: native to South America, widely cultivated in tropical and subtropical regions; two species (introduced) in China.
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Leaves glabrous or sparsely pubescent; bracts oblong or elliptic, as long as flowers; perianth tube distinctly angled, hairs very short, curved away from pedicel. |
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1 B. glabra |
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Leaves densely pubescent; bracts elliptic-ovate, longer than flowers; perianth tube rounded, hairs copious, spreading, to 1 mm. |
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2 B. spectabilis |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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