Alstonia boonei is a very large, deciduous, tropical-forest tree belonging to the dogbane family, Apocynaceae. It is native to tropical West Africa, with a range extending into Ethiopia and Tanzania. Its common name in the English timber trade is cheese wood, pattern wood or stool wood (see Ashanti Empire golden stool) while its common name in the French timber trade is "emien" (derived from the vernacular of the Ivory Coast).