Kingdom : Plantae
Species: L. inermis
The henna plant is native to northern Africa, Asia and northern Australia, in semi-arid zones and tropical areas. It produces the most dye when grown in temperatures between 35 and 45 °C.
Henna is a tall shrub or small tree, standing 1.8 to 7.6 m tall. It is glabrous and multi-branched, with spine-tipped branchlets. The leaves grow opposite each other on the stem. They are glabrous, sub-sessile, elliptical, and lanceolate ,acuminate , and have depressed veins on the dorsal surface. Henna flowers have four sepals and a 2 mm calyx tube, with 3 mm spread lobes. Its petals are ovate, with white or red stamens found in pairs on the rim of the calyx tube.The ovary is four-celled, 5 mm long, and erect. Henna fruits are small, zbrownish capsules, 4–8 mm in diameter, with 32–49 seeds per fruit, and open irregularly into four split