Horsfieldia kingii is a dioecious tree of the family Myristicaceae.

It grows up to 20 m tall[4] and has large seeds that are dispersed by frugivores such as hornbills and imperial pigeons.

[6] The fruit is an arillate capsule and is bi-coloured.

[5] The plant is referred to as ramtamul in Assamese language and is sometimes used as a substitute for betelnut.

[4] The leaves form a part of the diet of the endangered capped langur.