Murraya koenigii is a small tropical to sub-tropical tree in the family Rutaceae. The plant is widely found in Assam.  The Assamese common names of the tree are নৰসিংহ (Narasinha), বিষহৰি (Bishahari). The common names of the tree are curry tree, curry leaf tree. The plant is also sometimes called sweet neem.  
The stem and branches are covered with dark grey to brownish bark. Arrangement of leaves is alternate-spiral, leaflets are odd-pinnate, shape of leaves is oblong-lanceolate, and margin of leaves is serrate. The flowers are small white, and fragrant. The glossy fruits of curry leaf are round to oblong small purple-black and shiny berries.  Each fruit contains a single, dark green seed which takes up half the volume of the fruit. The pulp of fruit is edible.
 Curry leaves are unique for its strong aroma. Highly aromatic crushed leaves are extensively used in Indian cooking recipes. 
Murraya koenigii is used as a medicine to cure dysentery. It is considered as a tonic for ill health. It is also known to have anti-cancer, antioxidant, anti-diabetic, and anti-microbial properties.
Scientific classification of Curry leaf tree
Kingdom :Plantae
Phylum : Tracheophyta
Class : Magnoliopsida
Order :  Sapindales
Family :Rutaceae
Genus : Murraya
Accepted name :Murraya koenigii (L.) Spreng.