7. Ovary 2-, rarely 3-celled, with 2 ovules in each cell, supported upon a long stalk. Stamens numerous. Disc cup-shaped, crenate. Sepals 3, rarely 2 or 4, united at the base.--Species 6. Central Africa. =Courbonia= Brongn. Ovary 1-celled, sometimes incompletely 2-celled. Ovules 6 or more. Sepals 4, rarely 5. 8 8. Disc cup-shaped, crenate, accrescent. Stamens numerous. Ovules numerous. Stigma 4-lobed.--Species 3. West Africa. =Buchholzia= Engl. Disc ring-shaped. Stamens 6-20. Ovules 6-12. Stigma entire.--Species 30. Central Africa, northern South Africa, and Sahara. The fruits and roots of some are eaten or used medicinally. =Boscia= Lam. 9. Flowers dioecious. Sepals 5. Petals 5, united at the base. Stamens 10-13, borne upon a short androphore. Ovary 5-celled, with axile ovules. Leaves undivided.--Species 1. West Africa. =Cercopetalum= Gilg Flowers hermaphrodite or polygamous, very rarely dioecious, but then stamens numerous. Flowers nearly always 4-merous. 10 10. Stamens inserted on an elongated stalk-like androphore, united in two bundles, one of which contains 5-9 fertile, the other as many sterile stamens. Petals 4. Placentas 2. Leaves ternately compound.--Species 3. East Africa. =Cladostemon= A. Br. & Vatke Stamens inserted on a very short androphore or without an androphore. 11 11. Petals very unequal, two much larger than the others, wing-like. Stamens 5-7. Placentas 2. Leaves ternately compound.--Species 1. West Africa. Used as an ornamental plant. (_Pteropetalum_ Pax). =Euadenia= Oliv. Petals not very unequal. Stamens 8 or more. 12 12. Petals open in aestivation, with a long claw; sepals imbricate or open. Stamens upon a short androphore bearing scales within. Ovary upon a [Illustration: CRUCIFERAE. _FLOW. PL. AFR._ _Pl. 53._ J. Fleischmann del. Heliophila amplexicaulis L. fil. _A_ Plant with inflorescences. _B_ Flower cut lengthwise. _C_ Ovary cut lengthwise. _D_ Fruiting branch. _E_ Seed cut lengthwise.] [Illustration: CAPPARIDACEAE. _FLOW. PL. AFR._ _Pl. 54._ J. Fleischmann del. Polanisia hirta (Klotzsch) Sond. _A_ Branch with flowers and fruits. _B_ Flower cut lengthwise. _C_ Anther. _D_ Ovary cut lengthwise. _E_ Seed.] long gynophore, 1-or incompletely 2-celled, with 2 placentas. Leaves ternately compound.--Species 6. Tropics. Some species yield timber, edible fruit, or medicaments. =Crataeva= L. Petals imbricate in aestivation; sepals usually valvate. Disc and androphore little developed or wanting. 13 13. Leaves ternately compound, rarely simple and undivided, and then petals numerous. Petals clawed. Ovary with a long stalk, 1-celled.--Species 25. Central Africa. =Ritchiea= R. Br. Leaves simple, undivided. Petals 4, very rarely 5.--Species 50. Some of them yield timber, salad, condiments (capers from _C. spinosa_ L.), edible fruits, and medicaments; some are poisonous. =Capparis= L.