STATISTICS OF METASPERMAE. 



651 



In the above the 47.6 per cent, of monocotyledonous genera 

 that range north rather than south is interestingly in excess of 

 the 37.9 per cent, of Archichlamydeae and the 35.9 per cent, of 

 Metachlamydeae. In the following table the preponderant 

 southern ranges of the two higher groups of Metaspermae is 

 indicated. 



The excess of southern over northern ranges is observed 

 from both tables, preceding. The differences are greatest for 

 the Metachlamydeae, between 35.9 percent, and 63.2 percent., 

 and least for the Monocotyledones, between 47.6 per cent, and 

 59.0 per cent., respectively. This result is quite in keeping 

 with the results previously obtained and indicates the greater 

 cosmopolitan character of the Monocotyledones. Passing to 

 the other two tables of this group we note the relation between 

 eastern and western genera. 



