THE GYNCECIUM. 



61 



Fig. 73. 



Fig. 74. 



Fig. 73. — Cross section of the Fig. 74. — Cross section of the 



multilocular syncarpous gynoe- unilocular syncarpous gynoecium 



cium of the Oniyuri, showing of the Sumire, showing parietal 



axile placentation. placentation. 



Syncakpous GYNCECIUM 



Unilocular Syncarpous Gynoscium. 

 Multilocular Syncarpous Gynoecium. 



In the apocarpous gynoecium, as the placenta is always situated on the 

 interior surface of the ovary, the placentation (the manner in which the 

 placentas are distributed) is said to be Parietal (Fig. 55). In the multi- 

 locular syncarpous gynoecium, as the placentas are arranged in the centre, 

 the placentation is said to be Axile (Fig. 73). In the unilocular syncarpous 

 gynoecium composed of those open carpels which are united together by 

 their contiguous margins, the placentation is mostly Parietal (Fig. 74). 

 But, in the unilocular syncarpous gynoecium composed of those carpels 

 which have lost their dissepiments, as the placentas are situated in the 

 centre of the cavity and perfectly unconnected with the wall, the placenta- 

 tion is said to be Free Central; and in the ordinary unilocular syncarpous 

 one, the free central placentation is sometimes formed by the growth of 

 a placental column from the base of the ovary-cavity. (See Fig. 78.) 



All the kinds of gynoecium are represented in the follow- 

 ing table. 



Gynoecium 



Apocarpous ( Simple Apocarpous Gynoecium. 



Gynoecium { Multiple Apocarpous Gynoecium. 

 Syncarpous (Unilocular Syncarpous Gynoecium. 



Gynoecium} Multilocular Syncarpous Gynoecium. 



