380 



NATURAL HISTORY OF PLANTS. 



capitula. In the former the flowers are polygamo-diceckms, with a 

 variable number of parts to each verticil ; and the receptacle is not 



Callicoma serratifolia. 



Fig. 453. 

 Flowering branch (i). 



very marked, bearing above a cupulate disk, continuous, or with 

 distinct glandular elements. Hence the gynseceum is superior. In 

 the male flowers it remains rudimentary ; in the females it consists of 

 carpels free to a great extent. In each ovary are two collateral de- 

 scending anatropous ovules, like those of Codia ; but the placentary 

 margins are so involute that the raphe becomes external with respect 

 to the floral axis. The fruit is formed of two follicles, dehiscing 



