DESCRIPTIVE NOMENCLATURE. 241 



PAGE 



IV. REFUGES shelter the future plant itself for a 

 time 35 



V. RUINS form a basis for the growth of the future 



plant in its proper order 36 



Root-Stocks, the accumulation of such ruins in a vital 



order 37 



General questions relating to the office and chemical 



power of roots 38 



The nomenclature of Roots will not be extended, in 

 Proserpina, beyond the five simple terms here given : 

 though the ordinary botanical ones corm, bulb, tuber, 

 etc. will be severally explained in connection with the 

 plants which they specially characterize. 



II. THE STEM. 

 Derivation of word 137 



The channel of communication between leaf and 



root 153 



In a perfect plant it consists of three parts : 



I. THE STEM (STEMMA) proper. A growing or ad- 

 vancing shoot which sustains all the other 

 organs of the plant 136 



It may grow by adding thickness to its sides with- 

 out advancing ; but its essential characteristic is 

 the vital power of Advance 136 



