32 CONSERVATIVE ORGANS. PART I, 



is objectionable with regard to the use of one of the 

 terms employed. For as the term herb was pre- 

 viously appropriated to the designation of a peculiar 

 class or division of plants, it ought not to have been 

 employed to signify also a part of the plant itself. 

 Into per- Another division is that by which the parts in 



raanent . .. . . 



and tem- question are distributed into permanent and tempo- 

 gans7 rar y or deciduous ; the permanent parts being the 

 root, stem, and branches, which continue to exist as 

 long as the plant vegetates ; and the temporary 

 parts being the leaves, flower, and fruit, which fall 

 off and are renewed annually, at least in plants that 

 are themselves perennial. 



Into con- A third division is that by which the parts of the 

 plant are distributed into conservative and repro- 



i^ lveor ~ductive, as corresponding to their respective func- 

 tions in the economy of vegetation ; which principle 

 of division shall be here adopted, and the parts dis- 

 tributed as follows : conservative organs, conserva- 

 tive appendages, reproductive organs, reproductive 

 appendages. 



CHAPTER I. 



CONSERVATIVE ORGANS. 



THE conservative organs are such as are absolutely 

 necessary to the growth and preservation of the plant, 

 including the loot, trunk, branch, leaf, and frond; 

 of which in their order. 



