Barna Chilka, also known as Varun Chilka or the Lengum Tree (Crataeva nurvala), is a leafy tree with smooth bark and clusters of small, fragrant flowers. Its bark contains natural plant compounds such as saponins, flavonoids, and tannins. Barna Chilka is commonly found in riverbanks and moist areas across India and is recognized for its distinctive foliage and pleasant aroma.