THE COMPOSITE 



special name of pap- 

 pus. In some, you 

 observe, it does not 

 exist at all, the ad- 

 herent tube of the 

 calyx forming an in- 

 distinguishable part 

 of the ovary ; in such 

 cases the limb is 

 said to be obsolete. 

 Again, it is a mere 

 rim, or border; 

 sometimes it is cup- 

 shaped, or bristly, 

 or composed of 

 teeth, scales, awns, 

 or beards. 



C' 



FIG. 424. 



FIG. 425. 



In the dandelion (Fig. 426) and the thistle it is silky. 

 The cause of this singular condition of the calyx-limb may 



be that it is starved and stunt- 

 ed while growing, by the con- 

 stant pressure of 

 the florets against 



FIG. 426. FIG. 428. FIG. 427. 



each other. In the case of the dandelion, while the seed 

 is maturing, the tube of the calyx is prolonged above the 

 ovary into a kind of stalk, and the pappus is said to be 

 stipitate (Fig. 426). 



8 



