Coscinium fenestratum  

Weniwel
Vernacular Name: Sinhala: Weniwel; Eng: False calumba, Ceylon calumba root, turmeric tree; Hin: Jhari-huldi;
Description: Woody climber, roots and stems yellow inside. Stem-bark longitudinally fluted, whitish-grey in colour. Leaves alternate coriaceous, shining above, minutely whitish tomentose beneathl petiole long, inserted not far from the bae of laminal basal nerves 3-5. Inflorescence in paniculate raceme, borne in the mdl of fallen leaves, flowers unisexual Drupe globose.
Propagation: By seeds and vegetative methods.
Part Used: Stems and roots.
Chemical Constituents: The stems and the roots contain the alkaloid berberine l.53%.
Uses: Berberine is antibacterial. The stem, the roots and the purified berberine are used in treating diarrhoea, bacillary dysentery, enteritis, jaundice, pyrexia and dyspepsia. An eye- lotion berberine chloride is effective for opthalmia.