13. CUCUBBITACE&. [1. Zehnebu. 



A. Petals free or connate only at base. Flowers white 



1. Fls. small. 1 Kj panthium tubular-campanulate. 



Petals minute ... . . 



2. Fls. large or m. s., Hypanthiun of M, long 



narrow-tubular 

 Petals fimbriate., . . , . 

 Petals entire or toothed .... 



3. Hypanthium funnel-shaped. Fls. 2-4" diam. 



B. Petals connate atbase or nearly half-way up. Fls. 

 yellow. Hypanthium short. 



1. Fls. large (usually over 1£" diam.), not 



clustered (M. clustered in Luffa graveolens). 

 Stamens inserted near the mouth of the 



hypanthium. Petals nearly free. 

 M. fl. solitary and racemed in same axil . 

 Fls. all solitary 



2. Fls. mod.-sized, solitary on very slender 



peduncles. 

 Corolla 5-partite. Tendrils simple . , . 



8. Fl«. small or m. b., clustered (except Citrullus). 



a. Anthers straight. Pedicels very short. 



Tendrils simple . . • . 



o. Anthers curved or sigmoid. 



M. pedicels slender. Tendrils forked 



Fls. solitary. Tendrils 2-3-fid . 



Anthers crested. Tendrils simple . • 



C. Corolla gamopetalous half-way up or more. 



Fls. all solitary. 



Fls. very large, yellow. Tendrils 2-4-fid . 



Fls. m. s., white. Tendrils simple 



1. Zehneria. 



2. Trichosanthes. 



3. Gymnopetalum. 



4. Lagenaria. 



5. Lvffa. 



6. Benincasa. 



7. Momordica. 



8. Mukia. 



9. Bryonia. 



10. Citrullus. 



11. Cucwm.is. 



12 Cucurbita. 

 13. Cephalandra. 



1. Zehneria, Endl. 



Climbing herbs with a tuberous root. Leaves polymorphous 

 abounding in cystolitha (showing superficially when dry as 

 small pnstules). Tendrils simple. Fls. small tubular- 

 campanulate, monoecious or usually dioecious, in corymbose 

 racemes or females solitary. Peduncles frequently with a 

 long-stalked glandular bract at the base. Sepals minute. 



1 In the Fem. the part above the ovary only is referred to unless 

 otherwise specified 



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