52. Stamens 8-20. Disc of the female flowers reduced to two scales. Calyx 3-partite. Leaves opposite.--Species 3. North Africa; also introduced in South Africa. Used as dye-plants, pot-herbs, and in medicine. “Mercury.” =Mercurialis= L. Stamens 2-7. Disc none. Flowers monoecious. Leaves alternate. 53 53. Calyx of the female flowers 3-partite. Stamens 2-3. Leaves narrow, entire. Flowers in clusters.--Species 1. South Africa. =Seidelia= Baill. Calyx of the female flowers reduced to a single scale or absent. Stamens 4-7. Leaves broad, more or less toothed. Flowers in racemes.--Species 2. South Africa. =Leidesia= Muell. Arg. 54. Stem herbaceous. Flowers monoecious. Calyx of the female flowers imbricate in bud. Stamens 3-10. Disc of the female flowers reduced to 3-4 linear scales. Ovary 3-4-celled. Styles undivided.--Species 1. Central Africa. =Micrococca= Benth. Stem woody. Flowers dioecious, rarely monoecious, but then calyx of the female flowers valvate in bud. Ovary 2-3-celled. 55 55. Styles undivided. Disc of the female flowers entire or lobed. Stamens 5 or more, usually numerous.--Species 25. Tropical and South Africa. Several species yield timber or are used in medicine. =Claoxylon= Juss. Styles many-cleft. Stamens 3-12. Flowers dioecious. Shrubs. Stipules spiny. 56 56. Disc of the female flowers consisting of numerous, more or less ciliate scales; also 3 staminodes present. Sepals of the female flowers broad. Ovary 3-celled. Fruit a 3-celled capsule. Female flowers in pendulous spikes.--Species 1. Southern West Africa. =Poggeophyton= Pax Disc of the female flowers consisting of 2 narrow scales; no staminodes. Fruit a drupe. Female flowers in clusters.--Species 8. Central Africa. =Erythrococca= Benth. 57. (35.) Disc of the female flowers formed of 3 petal-like scales. Styles recurved, appressed to the ovary, united at the base, 2-cleft. Ovary 3-celled. Stamens 3. Anthers 4-celled. Flowers dioecious, the male ones in spikes, the female solitary or 2-3 together. Leaves pinnately nerved.--Species 3. West Africa. Yielding timber. =Hasskarlia= Baill. Disc absent. Styles erect or spreading. Flowers in spikes, racemes, or panicles. 58 58. Calyx of the female flowers 3-5-partite. Stamens numerous. Anthers 4-celled. Ovary 2-3-celled. Styles long and thin, 2-parted. Seed-coat leathery. Trees or shrubs. Inflorescence spicate or racemose.--Species 3. Central Africa. =Cleidion= Blume Calyx of the female flowers entire or shortly toothed. Connective not prolonged. Ovary 1-2-, rarely 3-celled. Styles undivided, usually short and thick. Seed-coat crustaceous. Leaves usually palmately nerved. (See 26.). =Macaranga= Thouars 59. (12.) Corolla present in the male flowers. 60 Corolla absent in the male flowers. 66 60. Flowers in corymb-or panicle-like inflorescences composed of cymes, nearly always monoecious. Stamens 5 or more, all or the outer opposite the petals, all or the inner united below. [Tribe JATROPHEAE.] 61