202. CONVOLVULACEAE 459 



8. Sepals unequal, the two outer ones much enlarged in the fruit. Corolla 



deeply lobed. Disc cup-shaped. Ovary i-celled. Ovules 2. Style 

 2-cleft ; stigmas linear or oblong. — Species i. Equatorial West 



Africa (Cameroons) Dipteropeltis Hallier 



Sepals about equal. Disc ring-shaped or indistinct. Ovary completely 

 or incompletely 2-celled. Ovules 4. Style divided to the base ; stigmas 

 capitate or peltate 9 



9. Inflorescence composed of racemes. Bracts surrounding the fruit much 



enlarged. Corolla deeply lobed, induplicate-valvate in bud. Ovary 

 incompletely septate. Stigmas peltate. — Species 2. West Africa. 



Neuropeltis Wall. 



Inflorescence composed of fascicles. Bracts not much enlarged in the fruit. 



Stigmas capitate. — ■ Species 2. East Africa. . . Porana Burm. 



10. Flowers dioecious. Sepals enlarged in the fruit. Corolla deeply cleft. 



Stigmas horse-shoe-shaped. Shrubs with small leaves i r 



Flowers hermaphrodite 12 



11. Sepals of the female flowers distinctly unequal, the outer much larger than 



the inner. Flowers usually 4-merous. — Species 4. Northern East 



Africa Hildebrandtia Vatke 



Sepals nearly equal. Flowers 5-merous. Styles united at the base. 

 Seeds 2. Branches stiff. — Species 2. Northern East Africa. 



Cladostigma Radlk. 



12. Stigmas filiform, 2-parted. Erect herbs or undershrubs. Leaves small. — 



Species 4. Tropical and South Africa Evolvulus L. 



Stigmas globose or peltate, usually entire. Shrubs 13 



13. Anthers and stigmas projecting beyond the corolla-tube. Sepals subequal. 



Corolla small, cleft to the middle, imbricate in bud. Fruit i-seeded. 

 Prostrate or ascending small shrubs. Leaves small. Flowers in 

 terminal spikes. — Species i. Tropical and North Africa. Used 



medicinally Cressa L. 



Anthers and stigmas concealed within the corolla-tube. Corolla folded in 

 bud 14 



14. Corolla small, funnel-shaped. Sepals subequal. Filaments glabrous, 



broadened at the base and usually toothed on each side. Stigmas more 

 or less peltate. Fruit 4-seeded. Erect or procumbent, small shrubs. 

 Leaves small. — Species 20. Tropical and South Africa. (Under 



Breweria R. Br.) Seddera Höchst. 



Corolla large or medium-sized. Filaments not toothed, but usually hairy 

 at the base. Stigmas more or less globose. Twining shrubs. Leaves 

 large or of moderate size. Flowers solitary or in axillary cymes or 

 terminal panicles ^5 



15. Sepals herbaceous or leathery, subequal, or the inner somewhat smaller, 



not enlarged after flowering. Corolla funnel-shaped. Fruit 4-seeded. — 

 Species 10. Tropics. (Under Breweria R. Br.) . Bonamia Thouars 



