Wrightia tinctoria R. Brown
| Synonym : | Allamanda verticillata Desf. Nerium tinctorium Roxb. Wrightia laciniataA. DC. Wrightia timorensis |
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| Bangla Name : | Nilkorobi |
| English Name : | |
| Family : | Apocynacea |
| Disease : | Diarrhoea, dysentery, blood dysentery |
| Description : | Deciduous trees; upto 15 m; bark 8-10 mm thick, grey, smooth; outer layer thin, inner layer thick, brittle, creamy; blaze greenish-yellow; latex milky white. Leaves simple, opposite, distichous, estipulate; petiole 2-5 mm long, stout, glabrous; lamina 3.5-11 x 2-4 cm, oblong-lanceolate or elliptic-ovate; base acute; apex acuminate or caudate acuminate; margin entire, glabrous, glaucous beneath, chartaceous; lateral nerves 5-10 pairs, slender, arched, pinnate, prominent, intercostae reticulate. Flower bisexual, white, scented, in terminal cymes appearing along with new leaves; pedicel 1.5 mm long, bracts 2, minute; calyx lobes 5, with membranous margin, 2 mm, ovate, obtuse, ciliate, glandular inside; corolla salver shaped, lobes 5, broad lobes 12 x 5 mm, oblong, obtuse, throat with 1-2 series of erect, fimbriate corona scales, tube 1.5-2 mm; stamens 5, insrerted on the mouth of the tube, anthers sagitate, spurred at base, conniving and adhering to the stigma; disc absent; carpels 2, free, many ovuled, style filiform, stigma ovoid, usually with a toothed basal ring. Fruit of 2 follicular mericarps, 15-45 cm long, slender, smooth, green, cylindric, cohering at the tip; seed 16 mm long, black, commate at one end |
| Distribution : | |
| Chemical Constituents : | . Seeds yield 30-49 % fixed oil. ?-SitosteroI, ?-amyrin and its acetate and lupeol benzoate from the bark. |
| Uses : | This plant is used in Diarrhoea, dysentery, blood dysentery. |
| Habit : | Tree |