Sideroxylon inerme subsp. inerme (aMasethole or white milkwood, Afrikaans: wit-melkhout, Xhosa: Ximafana, Zulu: Umakhwelafingqane) is a Southern African coastal tree, with dense foliage, black berries and small, foetid, greenish flowers. The tree's generic name means "Iron-wood" in Greek, referring to its very hard timber.