Pistil 



119 



pistil are united together, either entirely, as in the Lily (fig. 224), 

 or, as is often the case, the ovaries are united whilst the styles 

 and stigmas are free, as in the Sea-lavender (fig. 225). In 

 these cases the pistil is said to 'be syncarpous. When the 

 ovaries are distinct, as in the Buttercup (fig. 165), it is apocarpous 



Fig. 223. — Stamen ol 

 Erica, the anther open- 

 ing hy pores and hear- 

 ing two appendages at 

 its base. 



Fig. 224.— Pistil of 

 Lily, with ovary, 

 style, and stigma. 



Fig. 225, — Papillose 

 stigma of Staiice, 



(when there is only one carpel to the pistil, as in the case of 

 the Pea, it is also said to be apocarpous). If there is but one 

 carpel, the pistil is said to be monocarpellary. A biearpellary 

 pistil has two carpels, a tricarpellary three, a polycarpellary 

 pistil more than three. 



In a syncarpous pistil 

 we can often tell the num- 

 ber of carpels present by 

 the separate stigmas (or 

 styles) (fig. 225). In other 

 cases we find on making a 

 section that the syncarpous 

 ovary possesses several cells 

 or loculi, each correspond- 

 ing with a single carpel, so 

 that from them we can count the number of carpels (fig. 226). 

 Sometimes we find that there is but a single loculus in the 

 ovary, and we can then often tell the number of carpels by 



Fig. 226.— Capsule of Fig. 227. — Section of 

 Colchiatm ; trans- ovary of Viola. 



verse section. 



