Location in BHU campus : Restricted distribution in the campus. One large tree growing in Jodhpur colony.
Botanical name : Couropita guianensis Aubl
Family : Lecythidaceae
Vernacular / local Name : Bengali-Nagalingam, kamangola; Hindi-Topegola, nagalingam, shivalingam .
English names : Cannon-Ball tree
A tall tree up to 25 m high with massive trunk .Leaves alternate, entire, oblong-obovate or broad lanceolate. Flowers borne in racemes from the trunk and the branches ,beautiful with combination of white, yellow ,pink and crimson. Fruit a berry,15-20 cm in diameter, globular, resembling cannon balls.
Fruiting : December-February
The stigma protrudes like a lingam and is considered sacred to Shiva.
The shells of the tree are used as utensils and the pulp is eaten and made into a beverage.