OF THE PISTILS. 



67 



LESSON XVIII 



OF THE PISTILS. 



Fig. 202. Section of flower of Strawberry, — ovaries many, on a raised torue. 

 Fig. 203. Section of a Kose, — ovaries sunk into a hollow torus. 



121. The pistils occupy the centre of the flower, at the end 

 or centre of the torus. Their number varies in different 

 plants from one to one hundred, or more. When they are 

 several they stand arranged in a circle like the other organs. 

 When they are many they are commonly heaped together in 

 a spiral manner, and raised on the conical torus, as in Butter- 

 cup, Strawberry, or sunk into the cavity of a hollow one, as 

 in Rose. (See Figs. 202, 203.) 



122. The pistil consists, plainly, of three parts, as may be 

 seen in Fig. 204. At the top is the stigma (5), at base is tlie 

 ova7'y (0), and between them is the style {sty). The style 



121. In what part of the flower are the pistils situated? What is their 

 number ? their arrangement ? How situated in the Rose ? 



133. Please describe the pistil and each of its parts. In -what case is the 

 stiffma sessile ? 



