228 BOTANY. 



The inflorescence is termed cymose, or definite, or deter- 

 minate inflorescence because the growth of each axis is 

 stopped by the formation of a flower. 



Fig. 200. 

 Single umbel of the wild carrot. 



1. Monochasium; only one lateral branch is produced 



from each relative or false axis. 



Helicoid cyme; when the successive lateral branches 

 always arise on the same side of the false axis, as in 

 flower clusters of the forget-me-not. 



Scorpioid cyme: when the lateral branches arise alter- 

 nately on opposite sides of the false axis. 



2. Dichasium; each relative, or false, axis produces two 



branches, often forming a false dichotomy. Ex- 

 amples in shoots are found in the lilac, where the 

 shoot appears to have a dichotomous branching, 

 though it is a false dichotomy. 

 Forking cyme; flower cluster of chickweed. 



3. Pleiochasium; each relative, or false, axis produces 



more than two branches. 

 373. The fruit. — In some cases the single seed itself forms 

 the fruit as is the case with nuts, sunflower seeds, etc. In 

 other cases several seeds ripen inside of a single pistil as in the 



