Koinari (gardenia coronaria, family: rubiaceae) is a medium-sized deciduous tree with profuse branches at the top. The tree can get a height of 12-15 m. It is found in the hilly areas of Sylhet, Chottogram and Chottogram Hill Tracts of Bangladesh.
Leaves are simple, glossy green, oblong-lanceolate, 10-20 cm long, short-petioled, 3-5 opposite leaves at the top of the branchlets. Veins and midrib are stout in texture.
Fruit appears single or in a pair, 2-5 cm long, 5-angled.