V-] 



CAMPANULA. 



129 



The accompanying figures show a flower of C. 

 medium in three stages. In the bud (Fig. 90) just 

 before opening, it will be seen that the large, long 

 anthers clasp the pistil, which is no longer than they 

 are themselves. In the second stage (Fig. 91) the 

 anthers have opened on the inner side, and shed their 

 pollen, which adheres to the style. The anthers them- 

 selves then shrivel up, offering a surprising contrast to 

 their former condition. Insects visiting the flower for 



IG. go. FIG. 91. 



FIG. 90. Section of bud of Campanula medium. 



FIG. 91. Section of a flower in the first (male) condition. 



FIG. 92. Ditto, in the second (female) condition. 



FIG. 92. 



the sake of honey, do not, as far as I have observed, 

 generally walk on the petals, being deterred by the stiff 

 hairs which are scattered on their inner surface. In 

 any case, however, they are almost sure, sooner or later, 

 to clasp the style, when they necessarily dust them- 

 selves with the pollen. In this stage the flower is 

 incapable of fertilization. Gradually, however, the 

 style elongates, and the lobes of the upper end 



K 



