Clausena lansium

A fast-growing, tropical, evergreen shrub, or small tree, related to citrus, capable of growing up to 12m (40ft) high in its native habitat. The leaves have a pleasant scent of anise when bruised, but it is primarily grown for its edible pale-orange, egg-shaped fruits, which follow the springtime panicles of small white flowers, and are popular in southern China and Thailand for eating fresh similar to kumquats, for making jellies and for fruit drinks.