Grevea

Small dioecious, deciduous trees or shrubs. Leaves simple, opposite or subopposite, penninerved, petiolate; stipules 0. Male flowers in terminal or axillary, few-flowered inflorescences; bracts very small, obsolete or absent; calyx: tube +/- cupular, truncate, subentire or shallowly 3-lobed; petals 3, arising below margin of disc, imbricate; stamens (?2)3, alternipetalous, arising with petals, with introrse anthers dehiscing by longitudinal slits; disc fleshy, cupular, usually elevated in centre into a vestigial ovary. Female flowers solitary, terminal; calyx tube elongated, smooth and longitudinally striate or tuberculate to echinulate, with usually 4 inconspicuous lobes; petals usually 4; disc epigynous; staminodes present; ovary bicarpellary; style columnar, short and thick; stigmas 2-lobed; ovules 2-seriate on each placenta. Fruit indehiscent, crowned by persistent style. Seeds subellipsoid to subglobose; endosperm abundant, horny.