140 



LJESSONS WITS PLANTS 



conclude that while the ovary and stigma are 

 essential to a pistil, the style is not. 



154. In all the flowers which we have so far 



examined the style 

 is single ; that is, 

 there is only one 

 straight style on each 

 ovary. In the apple, 

 however (Fig. 139), 

 the styles are five, 

 while the ovary is 

 but one. The pupil 

 should now examine 

 any flowers which he 

 meets, with respect 

 to the absence or 

 presence of styles 

 and to their number ; 

 and he will find va- 

 riations from none 

 whatever to several, 

 or even many, to a 

 single ovary. 



155. In the hepatica, mustard and apple, the 

 stigma is one for each style ; in the tulip there 

 are three stigmas (or at least three parts to one 

 stigma) ; in the willow there are two stigmas, and 

 each is again two -parted, and in the catnip (Fig. 



Fig. 138. 

 Flowers of tulip. 



