Description of a new species, Diploglottis bracteata Leenh., from Queensland, Australia. Reduction of Euphorianthus (E. Malesia) to Diploglottis (NE. Australia). Discussion of the occurrence of actinomorphic and zygomorphic flowers in the Sapindaceae in nearly all tribes and even within ten genera. Discussion of the systematic position of Diploglottis bracteata: this species seems distinctly allied to and more derived than the New Caledonian genus Storthocalyx, and thus may belong to an old element of the Queensland flora allied with that of New Caledonia. On the other hand, D. bracteata is within Diploglottis closest to the East Malesian species, whereas the further Australian species are distinctly more derived. They may belong to a younger element in the Queensland flora of Malesian derivation.