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13. Cestrum L., Sp. Pl. 191. 1753. Gen. Pl. ed. 5.231.1753; Parker, For Fl. Punj. 371. 1918; Bailey, Stand. Cyclop. Hort. 2:726.1919; Matthews & Rani in Matthews, Fl. Tamilnadu Carn. 1:1048.1983.
YASIN J. NASIR
Shrubs or small trees, some of a climbing habit. Leaves alternate, entire. Flowers in axillary or terminal cymes, usually fragrant. Calyx campanulate or tubular, 5-toothed. Corolla salver-or trumpet shaped, 5-lobed, much exceeding the calyx in length; tube cylindric. Stamens 5, included. Ovary bilocular, with many ovules on an axile placenta. Fruit a berry. Seeds few.
About 175 species, mainly tropical America and Australia. Represented in Pakistan by 4 cultivated species.
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| 1 |
Flowers orange-yellow coloured, not fragrant |
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1 Cestrum aurantiacum |
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Flowers creamy-white to greenish-yellow, fragrant |
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(2) |
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| 2 (1) |
Flowers creamy-white, sweet scented by day. Calyx ± truncate, the lobes shallowly obtuse. Corolla 10 mm long, lobes obtuse, glabrous on the inside |
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2 Cestrum diurnum |
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Flowers greenish-yellow, sweet scented by night. Calyx lobes acute. Corolla 15-20 mm long, lobes acutish, pubescent on the inside |
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(3) |
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| 3 (2) |
Flowers in terminal and axillary panicles. Corolla lobes erect. Upper part of filament toothed |
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3 Cestrum nocturnum |
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Flowers in cymes or terminal panicles. Corolla lobes spreading. Upper part of filament not toothed |
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4 Cestrum parqui |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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