676 



CXXII. EUPHORBIACEiB (HUTCHINSON). 



[Drypetes. 



21. 



22. 



D. stipularis. 

 D. Mildhrcedii. 

 D. Henriquesii. 



D. arhorescens. 

 D. glabra. 



Male flowers with a pedicel 2 lin. long . 20. D. Principum. 



**Flower8 arising from the trunk or from the nodes 

 of two-year-old branches which are devoid or 

 almost devoid of leaves. 

 Stipules persistenti or subpersistent, ovate-lanceo- 

 late or lanceolate, |— | in. long. 

 Midrib and lateral nerves of the leaves glabrous 

 below ; stipules ^ in. long, ovale-lanceolate, 

 often toothed ...... 



Midrib and lateral nerves of the leaves pubes- 

 cent below ; stipules |- in. long, foliaceous, 

 lanceolate, entire ..... 



Stipules deciduous, small. 



Leaves with entire or slightly undulate margins. 

 Leaves equal- or subequal-sided at the base . 

 Leaves unequal-sided at the base. 



Flowers produced in the axils of the leaves 

 of the young shoots or from the nodes 

 of two-year-old branches. 

 Stamens 3. 



Disk of the male flowers cupular; 



ovary 4-celled . . . . 8. D. gahonensis. 



Disk of the male flowers thick and 

 fleshy; ovary 1 -celled . . .9. 



Stamens 8 16. 



Flowers produced on the old wood of 

 several years' growth. 

 Leaves oblong-elliptic, caudate-acumi- 

 nate, 4-6 in. long, 2-2j in. broad ; 

 petiole glabrous .... 23. D. Afzelii. 

 Leaves elliptic or lanceolate-elliptic, gra- 

 dually acuminate at the apex, 2-4 in. 

 long, 1-2 in. broad; petiole pubescent 24. 

 Leaves more or less distinctly toothed. 



Sepals densely ciliate, pubescent outside . 20. 

 Sepals shortly ciliolate, glabrous or nearly so 

 outside. 

 Flowers on more or less slender pedicels 

 2-6 lin. long. 

 Leaves rather small, 7 in. long or less. 

 Midrib of the leaf hairy below. 



Ovary and fruit glabrous . . 25. 



Ovary and fruit hairy . . . 26. 



Midrib of the leaf glabrous below. 



Leaves caudate-acuminate . . 27. D, ugandensis. 

 Leaves obtusely pointed, scarcely 

 acuminate. 

 Leaves oblong or oblong-lanceo- 

 late, denticulate ; pedicels of 

 the male flowers very slen- 

 der, 5-6 lin. long . . 28. D.florihunda. 

 Leaves ovate, dentate; pedicels 

 of the male flowers stouter, 

 2-3 lin. long . . .29. 



Leaves very large, 12 in. long or more . 30. 



D. usamharica, 

 D. Principum. 



D. Preussii. 

 D. pierreana. 



D. ovata. 

 D. Staudtii, 



