Catha edulis, bushman’s tea, Arabian tea or khat, may grow to a size of 15 m tall (SA Tree List No. 404). It has oblong to elliptic leaves positioned either opposite each other on older branches or spirally arranged on the young twigs. They are leathery, glossy above, pale below and pendulous. The leaf margins are toothed, each tooth being gland-tipped.

The flowers grow in great profusion in axillary clusters, mainly in spring. They are very small and white or pale yellow with green in the corolla throat. The fruit is a dehiscent three-valved capsule. The seed has a tiny narrow wing and a black aril.

Khat derived drug use dates back to ancient times in the Middle East. About ten million people use the drug obtained from this tree on a daily basis. There is much variation among the laws relating to this plant and its uses in different countries (Schmidt, et al, 2002; Van Wyk and Van Wyk, 1997; Wikipedia).