94 



BOTANY. 



FIG. 283. 

 Multiple Pistil. 



FIG. 284. 

 Multiple Pistil. 



A MULTIPLE PISTIL (Figs. 283 and 

 284) consists of several distinct carpels 

 is also apocarpous. 



Pluck from the pea or bean vine pods 

 of different ages and com- 

 pare them. The soft, 

 small bodies in the young 

 pods are called ovules. 

 The ripe, full-grown con- 

 tents of the mature pod 

 are seeds. Pod and con- 

 tents form the fruit. The 

 fruit of a plant is its rip- 

 ened ovary. Find the 

 ovules of unripe apples, 



tomatoes, cucumbers, etc. Count the carpels in all the 

 ovaries you examine. 



Look among dry pea or bean pods for those that 

 have begun to open. Examine the edges of the separate 

 parts. 



DEHIS'CENCE is the self-opening of an ovary at ma- 

 turity. 



A SUTURE is the line along which dehiscence occurs 

 (Figs. 31.7, 319). 



VENTRAL SUTURE the inner suture of a carpel 

 looking toward the center of the flower. In the pea and 

 bean it is the suture along which the ovules are attached 

 (Fig. 314). 



DORSAL SUTURE the outer suture. Besides dehiscent 

 ovaries, which open of themselves, find indehiscent ones. 



DISSEP'IMENTS the partitions between the cells of syn- 

 carpous ovaries (Figs. 291-318). 



PARIETES the walls of the ovary. 

 Axis the central part of an ovary. In compound 

 ovaries it is where the ventral sutures join together. Find 

 the axis in Figs. 291-318. 



