523 LXIV. CUCURBITACE2E (HOOKER). 



Tribe 1. Cucumerinese. — Stamens 3, rarely 2 or 5. Ovary with 3, rarely 2-5 

 placentas. Ovules and seeds horizontal. (Exception, the ovules are erect or pendulous 

 in Baphanocarpus.) 



A. Anther-cells flexuous or conduplicate. (Exceptions, anther- 

 cells straight or simply curved in 1'elfairia, Cucumeropsis, 

 Cladosicyos, Oreosicyos, and some species of Momordica 

 and Cucumis.) 

 *Corolla-lobes free to the base or nearly so. Filaments usually 

 free. 



tCalyx-lobes serrate. Petals cirrhose 1. Telpairia. 



fCalyx-lobes entire. Petals not cirrhose. 



**Calyx-tube of male elongate. Anthers included in the 



calyx-tube. 

 ffPetals very narrow, with subulate tips. 



Stem climbing. Tendrils simple 2. Trochomeria. 



Stem erect. Tendrils 3. Heterosicyos. 



ffPetals broad, rounded at the tip, anther-cells simply con- 

 duplicate. 



Petioles eglandular 4. Peponia. 



Anther-cells conduplicate and contorted. Petioles 2-glandular 5. Adenopus. 

 Anther-cells simply conduplicate. Petioles 2-glanduJar . . 6. Lagenaria. 

 See 7. Luffa, 16. Cucumis, and 17. Oreosicyos, some of 

 which have long calyx-tubes. 

 **Calyx-tube of male short, rarely long in Cucumis, Oreo- 

 sicyos, and Luffa. 

 Calyx-tube without scales inside. Filaments distinct, and 

 anthers broad, wholly exserted. 

 Male flowers racemed. Fruit fibrous inside, operculate. 



Petioles eglandular 7. Luffa. 



Male flowers solitary or fascicled. A leafless spiny shruh . 8. Acanthosicyos. 

 Male flowers solitary or racemed. Fruit globose woody. 



Petiole 2-glandular 9. Sph^rosicyos. 



Male flowers solitary. Fruit oblong, soft. Seeds flat. Pe- 

 tioles eglandular 10. Benincasa. 



Male flower solitary. Seeds pisiform. Petiole eglandular 11. Euryandra. 

 Calyx- tube without scales inside. Anthers sessile, broad, 

 peltately attached to the mouth of the calyx. 



Calyx even. Fruit ovoid 12. Cucumeropsis. 



Calyx grooved. Fruit cylindric-clavate 13. Cladosicyos. 



Calyx-tube of male short, with 2-3 incurved scales inside. 

 Filaments short, anthers more or le68 exserted. 

 Stamens 3. Fruit ovoid or long, many-seeded . . . .14. Momordica. 



Stamens 2. Fruit slender, 2-seeded 15. Baphanocarpus. 



Calyx-tube of male short or rather long, without scales. 

 Filaments short, inserted within the calyx-tube ; anthers 

 included or partially exserted. 



Connective produced at the apex 16. Cucumis. 



Connective not produced at the apex. 



Anthers minute, peltate, linear, cells straight . ... 17. Oreosicyos. 

 Anthers broad, cells flexuous. Pedicels not winged . . 18. Citrullus. 



Male pedicels broadly winged 19. Dimorphochlamys. 



See also 25. Bryonopsis, and 26. Dactyliandra.- 

 *Corolla campanula te, lobed to above or about the middle, 

 rarely below it. 

 Tendrils simple. 



Stigmas 3, narrow, 2-fid or 2-partite. Calyx-lobes entire 2.0. Cephalandra. 



Stigma 1, large, 3 lobed 21. Physedra. 



Stigmas 3. Calyx-lobes pectinate 22. Raphidiocystis. 



Tendrils usually divided. 



Flowers in short spikes . . , . , 23. Staphylosyce. 



Flowers solitary , , . 24. Cucurbits. 



