70 NATURAL HISTORY OF PLANTS. 



superposed to the petals. 1 Each has a free filament, swolleu and 



Cadia varia. 



Fig. 39. 

 Flower. 



Fig. 40. 

 Diagram. 



Fig. 41. 

 Longitudinal section of flower. 



Cadia varia. 



articulated at the base and tapering at the apex, and an introrse 

 two-celled anther of longitudinal dehiscence. The 

 free central ovary is that of a Leguminose. Its 

 ovary, supported on a slender foot, contains an 

 indefinite number of ovules in two vertical rows 

 on a placenta superposed to the anterior petal ; 

 they are anatropous and descending or horizontal, 

 with the micropyle looking upwards and outwards 

 (fig. 41).- The style is short and bowed, and 

 its apex curving towards the placenta dilates into 

 a very little papillose stigraatiferous head. The 

 fruit is a pod, supported on a slender foot, whose 

 base is surrounded by the persistent calyx and 

 receptacle (fig. 42). It is slender elongated 

 coriaceous and glabrous, enclosing a variable 

 number of seeds (figs. 43, 44), which contain within 

 their coats a fleshy exalbuminous embr}*o, with 

 an inrlexed radicle accumbent on the two lateral 

 cotyledons. Cadia consists of shrubs from the 

 coast and islands of tropical Africa, with alternate 

 imparipinnate leaves possessing two lateral stipules. 



The flowers are in few- or one-fiowered racemes, 3 terminating 



Fig. 42. 

 Fruit (§). 



1 "These five stamens are at first shorter than 

 the rest, and are originally inserted outside of 



them. 



3 These ovules have two coats, and are at 

 £rst arranged in two parallel rows. Their final 



direction is often such that the raphe is inferior 

 and quite horizontal. 



3 In C. varia, there are few flowers on each 

 axis ; or there is a single flower terminating a 

 little axillary branch, which bears one or few 

 bracts below it. 



