9. (2.) Stamens 4-6. Carpels free, either as to the ovaries or as to the styles. Flowers usually polygamous. 10 Stamens 8-10. Fruit drupe-like. Trees. 12 10. Sepals 3. Petals 3. Stamens 6. Carpels 2, united at the base. Stigma subsessile, discoid. Fruit 2-celled, winged. Leaves undivided.--Species 1. Seychelles. [Tribe SOULAMEEAE.] =Soulamea= Lam. Sepals, petals, stamens, and carpels 4. Stigma small. Leaves pinnate. 11 11. Ovaries and styles free or united at the base only. Petals short. Fruit consisting of 4 drupes. Rusty-hairy plants.--Species 5. Central Africa. Used medicinally. [Tribe PICRASMEAE.] =Brucea= J. S. Muell. Ovaries united; styles free. Petals long. Fruit separating into 4 leathery mericarps suspended from a central column.--Species 5. Central Africa. [Tribe KIRKIEAE.] =Kirkia= Oliv. 12. Carpels free for the greater part. Leaves pinnate.--Species 1. Madagascar. Poisonous. =Perriera= Courchet Carpels wholly united. Leaves undivided. Flowers hermaphrodite. 13 13. Stigma 2-parted. Ovary 2-celled. Disc ring-shaped, lobed. Anthers oblong. Flowers solitary or in clusters in the axils of the leaves.--Species 1. South Africa. (Under _Nectaropetalum_ Engl.) =Peglera= Bolus Stigma entire. Disc cushion-shaped. Anthers ovate. Flowers in panicles. [Tribe IRVINGIEAE.] 14 14. Ovary 4-5-celled. Fruit broader than long, angled, 4-5-celled, with a thin fleshy layer.--Species 3. Equatorial West Africa. =Klainedoxa= Pierre Ovary 2-celled. Fruit oblong, 1-2-celled. 15 15. Fruit much compressed, broadly winged all round, 2-celled, 2-seeded, with a thin fleshy layer.--Species 2. Equatorial West Africa. (Under _Irvingia_ Hook. fil.) =Desbordesia= Pierre Fruit slightly compressed, not winged, 1-celled, 1-seeded, with a thick fleshy layer.--Species 5. Central Africa. They yield timber, edible fruits, and oily seeds (dika). (Including _Irvingella_ van Tiegh.) (Plate 74.) =Irvingia= Hook. fil. FAMILY 117. BURSERACEAE Trees, rarely shrubs. Bark resinous. Leaves usually pinnate. Flowers panicled, regular, mostly polygamous. Perianth consisting of a calyx and a corolla of 3-5 free petals. Stamens twice as many as the petals, inserted on the margin or the outside of the disc, rarely within. Anthers versatile, opening inwards by longitudinal slits. Ovary 2-5-celled. Ovules 2 in each cell, pendulous or attached laterally. Style simple or wanting; stigma lobed. Fruit drupe-like, but sometimes dehiscent. Seeds exalbuminous. Embryo with a superior radicle and usually folded or twisted cotyledons.--Genera 7, species 160. Tropical and South Africa. (Under _TEREBINTHACEAE_). (Plate 75.)