Warburgia

Warburgia , also known as Ugandan greenheart or simply greenheart tree, is a species of evergreen tree native to East Africa. Countries in which the plant species is found include Kenya, Tanzania and Uganda. The wood is resistant to insect attack and very strong. It was commonly used for the yoke pole of ox-wagons, the Disselboom. Early Indian immigrants to Kenya, working on the construction of the railway, used the leaves to flavor their curries before the chilli plant was commonly introduced. The flavor is hot and subtly different from chillies.