' STATISTICS OF METASPERMAE. 715 



of Minnesota Valley Metaspermic Species. — Continued. 



EASTERN. 



Hieracium longipilum 

 Hieracium venosum . . 

 Hieracium canadense . 



WESTERN. 



Adopogon virginicum Adopogon virginicum 



Lygodesmia juncea 

 Prenanthes serpentaria. 



Prenantties alba 



Prenanthes aspera 



Prenanthes racemosa . . . 

 Prenanthes crepidinea. . 



Crepis runcinata 



Hieracium longipilum, 



Hieracium canadense . 



Taking these up in order, let us first note the character of 

 the northern element : 



In this table, as in the next three of its series, there is an 

 exact parallelism with the four generic tables of similar con- 

 struction. While the Archichlamydeae from their number 

 form the larger percentages of each range-element, the taxo- 

 nomic groups themselves analyse as before by range -elements . 

 The other three tables may now be added. 



