56. 0U01TTIBTTACK.T5. 31 



Ovnlos ])oncTnloas. Flowers small, female in jia.nicln or man.y- 

 flowered racemes. Stamens 5, free, each with a single small 

 straight anther (ZanonieajV 15 



( 1 ) Anther-cells conduplicate or sigmoid. (2) 



Anther-cells sti'aight (or in Bryonia somewhat curved). 10. 



( 2 ) Corolla divided nearly or quite to the base into 5 petals. (3) 

 CoroUa campanulate, divided half-way down or thereabout. (9) 



( 3 ) Petals fimbriate at their margin Trichosauthcs. 1 



Petals entire. (4) 



( 4 ) Calyx-tube of the male flowers elongate ; anthers usually included in 



the tube or nearly so. (5) 

 Calyx-tube of the male flowers short ; anthers usually exserted from 

 the tube or nearly so. (6) 



(5) Seeds many, horizontal. Tendrils rarely divided . . . . Gymnopetalvm . 2 

 Tendrils divided. Fruits very large, petioles with 2-glands at the 



apex Lagenaria. ?> 



( 6 ) Stamens inserted near the mouth of the calyx-tube ; anthei's hardly 

 or not at all cohering. (7j 

 Stamens inserted below the mouth of the calyx-tube; anthers more 

 or less cohering. (8) 

 ( 7 ) Male flowers (partly) in racemes. Fruits opening by a stopple. 



Lvffa. 4 



Flowers aU solitary. Fruits very fleshy, indehiscent Benincasa. T) 



( 8 ) Male flowers (partly) racemed. Tendrils simple .... Momordlca. (1 



Male flowers clustered or solitary. Tendrils simple Gucumis. 8 



Flowers all solitary. Tendrils 2-3-fld Citrtdhw. 9 



( 9 ) Tendrils divided. Flowei-s yellow CucurUta. 10 



(10) Flowers not large, yellow, male racemes or pedicels not stout. (11) 

 Flowers krge, deep yellow, male racemes stout. (14) 



(11) Male and female pedicels 1-flowered, clustered. (12) 

 Male flowers corymbose or subumbellate or racemed. (13) 



(12) Tendrils 2-fid Bryonia. 11 



Tendrils simple Muldq. 12 



