538 223- CUCURBITACEAE 



i8. Staminodes in the female flowers thread-like, curved. Connective not 

 prolonged at the apex. Male flowers without a rudimentary pistil. 

 Stigmas i — 2. Ovules numerous. Calyx-segments broad. Fruit bottle- 

 shaped. Seeds globose. Leaves toothed or lobed. — Species 3. South 



Africa to Ngamiland Toxanthera Hook. 



Staminodes in the female flowers smaU or wanting. Connective pro- 

 longed at the apex, very rarely not prolonged, but then fruit oblong, 

 without a beak, and leaves deeply divided. Ovules usually few. — 

 Species 15. Central and South Africa. Some are used as ornamental 

 or medicinal plants. (Including Coniandra Schrad. and Rhynchocarpa 

 Schrad.) Kedrostis Medik. 



19. (6.) Ovules soHtary in each ovary-cell, erect. Style surrounded at the 



base by a disc Staminodes present in the female flowers. Anthers 

 cohering. Petals undivided. — Species i. West Africa and Canary 

 Islands. (Including Trianosperma Mart.) [Subtribe abobrinae.] 



Cayaponia Manso 



Ovules 2 or more in each ovary-cell or upon each placenta, horizontal, 



rarely ovary i-celled with 2 ovules, one erect, the other pendulous. 20 



20. Petals slit at the edge, free or nearly so. Calyx-tube long. Stem climbing. 



Leaves cleft or compound. Tendrils 2 — 3-cleft. Male flowers in 



racemes. [Subtribe trichosanthinae.] 21 



Petals not sHt 22 



21. Starnens combined into 3, projecting beyond the catyx-tube. Male flowers 



with a rudimentary pistil. Fruit snake-shaped. Leaves 3 — 7-lobed. 

 Tendrils 3-cleft. Flowers white. — Species i. Cultivated and natural- 

 ized in Madagascar and the neighbouring islands. Used as a vegetable 

 or as an ornamental or medicinal plant. " Snake-gourd." 



Trichosanthes L. 

 Stamens 5, free, seated in the calyx-tube. Male flowers without a rudi- 

 mentary pistil. Fruit pear-shaped. Leaves ternately compound. 

 Tendrils 2-cleft. — Species i. Madagascar. . . . Delognaea Cogn. 



22. Corolla distinctly campanulate, lobed or cleft. Ovules numerous. Flowers 



large or medium-sized, the male without a rudimentary pistil. Leaves 



entire, toothed, or lobed. [Subtribe cucurbitin ae.1 .... 23 



Corolla more or less rotate. [Subtribe cucumerinae.] .... 26 



23. Calyx-segments pinnately dissected. Female flowers without staminodes. 



Style long, inserted on the disc. Stigmas 3, 3 — 5-lobed. Fruit dry. 

 Tendrils simple. — Species 4. Tropics. {Raphidiocystis Hook.) 



Rhaphidiocystis Hook. 

 Calyx-segments undivided. Female flowers provided with staminodes. 24 



24. Flowers monoecious. Style short and thick. Stigmas 3 — 5, 2-lobed. 



Tendrils 2- or more-cleft. — Species 4. Cultivated and sometimes 

 naturalized. They yield edible fruits, oil, and medicaments, and serve 

 as ornamental plants. " Pumpkin." Cucurbita L. 



