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Pakistan | Family List | Solanaceae

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.


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.

1 Flowers orange-yellow coloured, not fragrant   1 Cestrum aurantiacum
+ Flowers creamy-white to greenish-yellow, fragrant   (2)
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   2 Cestrum diurnum
+ Flowers greenish-yellow, sweet scented by night. Calyx lobes acute. Corolla 15-20 mm long, lobes acutish, pubescent on the inside   (3)
3 (2) Flowers in terminal and axillary panicles. Corolla lobes erect. Upper part of filament toothed   3 Cestrum nocturnum
+ Flowers in cymes or terminal panicles. Corolla lobes spreading. Upper part of filament not toothed   4 Cestrum parqui

Lower Taxa


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