Alstonia scholaris is a glabrous tree and grows up to tall. Its mature bark is grayish and its young branches are copiously marked with lenticels. The upper side of the leaves are glossy, while the underside is greyish. Leaves occur in whorls of three to ten; petioles are ; the leathery leaves are narrowly obovate to very narrowly spathulate, base cuneate, apex usually rounded; lateral veins occur in 25 to 50 pairs, at 80-90° to midvein. Cymes are dense and pubescent; peduncle is long. Pedicels are usually as long as or shorter than calyx. The corolla is white and tube-like, ; lobes are broadly ovate or broadly obovate,, overlapping to the left. The ovaries are distinct and pubescent. The follicles are distinct and linear. Flowers bloom in the month October. The flowers are very fragrant similar to the flower of Cestrum nocturnum. Seeds of A. scholaris are oblong, with ciliated margins, and ends with tufts of hairs. The bark is almost odorless and very bitter, with abundant bitter and milky sap.
Range
Alstonia scholaris is native to the following regions:
During Convocation the leaves of Alstonia scholaris are awarded to graduates and postgraduates and scholars of Visva-Bharati University by Chancellor who in turn always the Prime Minister of India this tradition signifies the name of the plant. This Tradition was initiated by the founder of the University Gurudeb Rabindranath Tagore. , West Bengal, India The wood of Alstonia scholaris has been recommended for the manufacture of pencils, as it is suitable in nature and the tree grows rapidly and is easy to cultivate. In Sri Lanka its light wood is used for coffins. In Borneothe wood close to the root is very light and of white color, and is used for net floats, household utensils, trenchers, corks, etc. In Theravada Buddhism, Bodhi by first Lord Buddha is said to have used Alstonia scholaris as the tree for achieving enlightenment. The 1889 book 'The Useful Native Plants of Australia’ records that "The powerfully bitter bark of this tree is used by the natives of India in bowel complaints. It has proved a valuable remedy in chronic diarrhoea and the advanced stages of dysentery. It has also been found effectual in restoring the tone of the stomach and of the system generally in debility after fevers and other exhausting diseases. It is described in the Pharmacopoeia of India as an astringent tonic, anthelmintic, and antiperiodic. It is held in the highest repute in the Phillippine Islands . For further information see Dymock. Most writers who speak of it at all speak of it in terms of the highest praise. A very full account of the various substances which have been extracted from this bark will be found in Watt's Dict., 3rd suppt., Part i., page 688 et seq." At one time, decoctions of the leaves were used for beriberi.
