Catha edulis

Khat or qat (Catha edulis), also known as Bushman's tea, especially in South Africa, is a species of flowering plant in the family Celastraceae, and the sole species in genus Catha. It is a shrub or tree native to eastern and southern Africa, ranging from Ethiopia and South Sudan to Angola and the Cape Provinces of South Africa. It grows in montane riverine and evergreen forests from 1,100 to 2,400 metres elevation. It has a history of cultivation originating in the Harar region of Ethiopia, and it was subsequently introduced at different times to countries nearby in East Africa and South Arabia, notably Somalia and Yemen. Cultivated by farmers, its leaves are sold on the market to be chewed as a recreational stimulant. The world's largest consumers are East Africans, particularly Somalis, and nearby Yemen, with the largest producers/exporters being Ethiopia and Kenya. Khat contains the alkaloid cathinone, a stimulant which causes greater sociability, excitement, mild loss of appetite ......read more on Wikipedia.