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(Last Modified On 9/10/2013)
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(Last Modified On 9/10/2013)
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Genus
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Ixora L.
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PlaceOfPublication
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Sp. P1. 110. 1753
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Note
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TYPE: I. coccinea L.
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Synonym
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Sideroxyloides Jacq., Sel. Stirp. Amer. 19. 1763. TYPE: S. ferreum Jacq. Siderodendron Schreb., Gen. P1. 1: 71. 1789. TYPE: S. floribundum A. Rich.
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Description
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Trees or shrubs. Leaves occasionally ternate, usually thick; petioles occa- sionally wanting; stipules free, usually acuminate. Inflorescences terminal or ax- illary, corymbose, the pedicels of the flowers bracteolate. Flowers variously col- ored, the hypanthium ovoid, the calycine cup 4(-5)-lobed; corolla salverform, slender, the lobes 4-5, contorted; stamens 4(-5), the anthers linear, dorsifixed, exserted; ovarian disc swollen, the style slender, the stigmas 2, exserted, the ovary 2-celled, the ovules solitary, peltately attached to the middle of the septum. Fruits baccate, leathery or fleshy; seeds concave convex, the testa membranous.
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Habit
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Trees or shrubs
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Distribution
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Ixora, a genus of about 400 species, is widely distributed throughout the trop- ics of the world.
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Key
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a. Inflorescences capitate; corolla tube 30-45 mm long. b. Leaves sessile or subsessile; corolla red or orange ...... 1. I. coccinea bb. Leaves obviously petiolate; corolla white ...... 2. I. findlaysoniana aa. Inflorescence cymose paniculate, spreading; corolla tube 3-5 mm long. c. Leaves 16-24 cm long; peduncles ca. 2.2 cm long; flowers sessile or subsessile; fruits ca. 1 cm in diam. ...... 3. I. floribunda cc. Leaves 7-16 cm long; peduncles 5-9 cm long; flowers with pedicels to 5 mm long; fruits ca. 0.4 cm in diam. ...... 4. I. nicaraguensis
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