On Flowers and Insects. 



143 



is carried so far, that a whole group of florets is 

 ordinarily spoken of as one flower. The Daisy, for 

 instance, is not really a flower, but a group of little 

 flowers on a single stalk. Let us take, for instance, 

 the common Feverfew, or large White Daisy (figs. 

 43, 44, 45). Each head consists of an outer row of 



Fig. 43. Floret of FEVERFEW (Chrysanthemum parthenium), 

 just opened. 



pistillate florets or little flowers, in which the tubular 

 corolla terminates on its outer side in a white leaf 

 or ray, which serves to make the flower more con- 

 spicuous, and thus to attract insects. The central 

 florets are tubular, and make up the central yellow 

 part of the flower-head. Each of these florets con- 

 tains a circle of stamens, the upper portions of 



