Nagkesar, Ceylon Ironwood (Mesua ferrea) Description of Plant Beautiful evergreen tree of nagakesar grows up to height of 30mt in height, buttressed at base about 90cm in diameter. Pendulous leaves are 8-15cm long and are simple, narrow, lanceolate, opposite and dark grey to dark green in color. Bark of the tree is dark ash grey in color and branches are glabrous and slender. Flowers of the tree are bisexual about 4-7cm in diameter with four white petals and yellow stamen.