''Toona'' comprises 4 or 5 species and occurs in tropical Asia and eastern Australia. It is closely related to ''Cedrela'' from tropical America. ''Cedrela odorata'' L. is planted as a roadside tree and shade tree in tropical Africa, also in timber plantations, and has often been confused with ''Toona ciliata''. It differs in its flowers having a longer column (androgynophore) on which the stamens and pistil are borne and in its entire seedling leaflets.
=== ''Toona sinensis'' ===''[[Toona sinensis]]'' (A.Juss.) M.Roem. is planted in some African countries, e.g. Uganda and Tanzania, mainly as a roadside tree. It differs from ''Toona ciliata'' in its toothed leaflets and seeds winged at only one end. The wood properties are comparable to those of ''Toona ciliata''.
== Ecology ==