Typhonium trilobatum, T. flagelliforme, T. roxburghii, and T. blumei are taxonomically distinct, but their epithets (including that of T. divaricatum, nom. illegit.) frequently have been interchanged, primarily because of nomenclatural problems involving synonymy and (mis)typifications. It is concluded that the last monographer (Engler, 1920) used the correct names for the four species, except for what he called T. divaricatum, here called T. blumei.