BOTANY 01 Bill A 



CHAPTEB VI. 

 TAXONOMY AND CLASSIFICATION. 



phvla, the arrangement should, so far as possible, be phyl*- 

 The groups derived from the supposedly more priming 

 i should logically come first. But as ^V^^'V ■!'' 



supposed allied group or groups to which reference 

 ird should be made are sometimes also pointed to w 



difficulty of a phylogenet 



n the relative position of the main groups sm- 

 idophvta, Pteridosperms, (Jymnospcrn.s and A. 

 app.-ared satisfactorily settled, are again under 

 n l.ccn suggested that the different groups < 



