8 GENERAL MORPHOLOGY 



the leaves are alternate ; in other words, each phytomer is 

 single-leaved ; while in the subsequent illustrations of plants 

 developed from the seed, at least the earliest phytomera are 

 two-leaved. 



18. The plan thus exhibited in the leafy stem begins in the 

 embryo, or initial plant in the seed, and is carried on into the 

 flower, in which the normal development of the axis finally ends. 

 One plan prevails throughout. To illustrate it, the morphology 

 and growth of the embryo, of the plant developed for vegetation 

 and the general purposes of its individual existence, and lastly 

 of the flower, through which sexual reproduction takes place, 

 may be successively treated in this order. 



