Sideroxylon

thumb|202px|right|Leaves of Sideroxylon mirmulano Sideroxylon is a genus of trees in the family Sapotaceae described as a genus by Linnaeus in 1753. They are collectively known as bully trees. The generic name is derived from the Greek words σιδηρος (sideros), meaning "iron", and ξύλον (xylon), meaning "wood."

==Distribution== The genus is distributed mainly in North and South America as well as in Africa, Madagascar, southern Asia, and various oceanic islands. Some species, such as gum bully (S. lanuginosum), S. tenax, and buckthorn bully (S. lycioides), are found in subtropical areas of North America. The only South African species, the white milkwood (S. inerme), is associated with three historical sites, and these individuals were declared national monuments due to their unusual longevity.