42. Styles united at the base, two-cleft. Trees. Leaves penninerved.--Species 2. Madagascar. (Including _Orfilea_ Baill., under _Alchornea_ Swartz) =Lautembergia= Baill. Styles free, undivided.--Species 10. Tropics to Delagoa Bay. Some of them yield dye-stuffs. =Alchornea= Swartz 43. (37.) Styles laciniate. Ovary nearly glabrous. Disc in the male flowers consisting of glands situated outside the stamens, in the female indistinct. Sepals 5. Trees. Leaves penninerved, without stipules. Flowers dioecious, the male in clusters arising from the old wood, the female in axillary racemes.--Species 1. East Africa. =Crotonogynopsis= Pax Styles two-cleft or undivided, but usually ciliate within. Ovary usually hairy. Disc indistinct in the male flowers. Sepals 2-4, very rarely 5. Flowers in spikes or panicles. 44 44. Styles two-cleft. 45 Styles undivided. 47 45. Flowers dioecious, in panicles. Calyx of the male flowers 2-partite. Disc indistinct. Plants clothed with stellate hairs. Leaves palminerved.--Species 5. Central Africa. =Neoboutonia= Muell. Arg. Flowers monoecious, all or the female in spikes. Calyx of the male flowers 4-5-partite. Disc distinctly developed in the female flowers. Trees. Leaves penninerved. 46 46. Disc of the female flowers expanded. Styles thick. Leafstalk rather short. Stipules lanceolate, persistent.--Species 1. West Africa. =Necepsia= Prain Disc of the female flowers cupular. Styles awl-shaped. Leafstalk very short. Stipules awl-shaped, deciduous. Spikes unisexual.--Species 1. Madagascar. (Under _Alchornea_ Swartz) =Palissya= Baill. 47. Calyx of the male flowers 2-partite. Stamens numerous. Styles thickish, united at the base. Shrubs. Leaves narrow, penninerved. Flowers in axillary spikes, monoecious.--Species 1. Equatorial West Africa. =Neopycnocoma= Pax Calyx of the male flowers 3-5-partite. 48 48. Flowers in leaf-opposed spikes, monoecious. Calyx 4-partite. Styles 4. Stem herbaceous. Leaves broad.--Species 2. Southern West Africa (Amboland). =Pseudotragia= Pax Flowers in axillary or terminal spikes or panicles. Stem woody. 49 49. Leaves narrow, penninerved. Flowers monoecious, in spikes. Calyx of the male flowers 3-partite. Styles thin.--Species 1. Central Africa. =Argomuellera= Pax Leaves broad, palminerved. Flowers usually dioecious.--Species 10. Tropical and South Africa. (Including _Echinus_ Lour.) =Mallotus= Lour. 50. (36.) Anther-halves attached at the middle. Stamens 6-12. Calyx 5-partite. Ovary 3-celled. Styles 3, united at the base, 2-cleft. Herbs. Flowers in cymes.--Species 8. South Africa. (Including _Paradenocline_ Muell. Arg.) =Adenocline= Turcz. Anther-halves attached at the base or the top. Styles undivided or many-cleft. 51 51. Anther-halves attached at the top, pendulous, spreading downwards. Styles 2, rarely 3, undivided. Herbs or undershrubs. 52 Anther-halves attached at the base, erect, spreading upwards. 54