312 122. EUPHORBIACEAE 



20. Young brandies and leaves clothed with 2-cleft or star-like hairs. Trees. 



Leaves palmately nerved. Flowers in panicles, monoecious. Stamens 

 8 — 20. Fruit a drupe. - Species 2. Cultivated and naturalized in 

 the tropics. They yield timber, gum-lac, tanning bark, dye-stuffs, and 



edible oily seeds (" candle-nuts ") Aleurites Forst. 



^'oung branches and leaves clothed with simple hairs, or glabrous. Shrubs. 

 Inflorescence spicate or racemose, more rarely paniculate, but then 

 leaves pinnately nerved. Fruit a capsule 21 



21. Flowers in panicles, dioecious. Calyx 2 — 3-partite in the male flowers, 



4-partitc in the female. Corolla in the female flowers falling off very 

 early, or wanting. Stamens numerous, free. Male flowers without a 

 rudimentary pistil. Branches downy, at least when young. — Species 2. 



West Africa (Cameroons) Grossera Pax 



Flowers in spicate or racemose inflorescences. Stamens 6 — 13.. . . 22 



22. Flowers monoecious. Calyx 5-partite. Stamens to, united at the base. 



Anthers attached by the back. Male flowers without a rudimentary 

 pistil. Branches glabrous. — Species i. Madagascar and Comoro 



Isla;Tds Tannodia Baill. 



Flowers dioecious 23 



23. Branches glabrous. Anther-halves suspended from the connective. — 



Species 2. West Africa and Comoro Islands. . Agrostistachys Dalz. 



Branches hairy. Styles 2-cleft. Leaves stalked. — Species 2. East 



Africa Holstia Pax 



24. (13.) Styles united to about the middle or beyond 25 



Styles free or united at the base only 32 



25. Styles united nearly to the top into a usually hollow column. ... 26 

 Styles united about to the middle, undivided. Ovary 3-celled. . . 31 



26. Calyx of the female flowers entire or shortly toothed. Anthers 3 — 4-celled. 



Ovary i — 2-, rarely 3-celled. Trees or shrubs. — Species 50. Tropical 



and South Africa. (Including Mappa .fuss.) . . Macaranga Thouars 



Calyx of the female flowers 4 — 12-partite. Antliers 2-celIed. Ovary 



3-— 4-, rarely 5-celled 27 



27. Flowers dioecious. Calyx of the female flowers 4-partite. Ovary 4-celIed, 



winged. Style rather long, columnar, with a 4-lobed stigma. Seeds 

 with an outgrowth at the hilum. Trees. — Species i. West Africa 



(Cameroons) Tetracarpidium Pax 



Flowers monoecious. Calyx of the female flowers 5 — 12-, rarely 4-partite. 

 Seeds usually without an outgrowth 28 



28. Calyx of the male flowers 3-partite, of the female 5 — 6-partite. Stamens 3, 



with united filaments. Ovary 3-celled. Style imited into a globose 

 body. Climbing shrubs. Flowers in spikes. — Species i. Mada- 

 gascar Sphaerostylis Baill. 



Calyx of the male flowers 4 — 6-partite. Stamens 4 — 30 29 



29. Stamens 4 — 6. Rudimentary pistil of the male flowers columnar. Ovary 



3-celled. Trees or shrubs, with stellate hairs. Leaves undivided. 



