THE DEHISCENCE OF ANTHERS BY APICAL 



245 



TABLE E. 



SPECIES OF SOLANUM AND CASSIA COMPARED WITH OTHERS OF SAME 



TYPE. 



Region. 



Solanura. 



i 



5.98% 



2 



1.84% 



3 



7.22% 



4 



64.85% 



5 



2.68% 



6 



5.36% 



7 



7.53% 



8 



. .10% 



9 





10 



2.66% 



11 





12 



.82% 



13 



1.44% 



14 



.52% 



Cassia. 



Others. 





i 



6.55% 

 2.43% 

 8.49% 

 70.39% 

 .73% 

 8.01% 

 4.13% 



3.39% 

 .31% 

 .49% 



2.67% 



22 = 



= 4.94% 



19 = 



= 4.26% 



59 = 



= 13.25% 



223 = 



= 50.11% 



8 = 



= 1.79% 



101 = 



= 22.69% 



12 = 



= 2.69% 



1 = 



= .22% 



• I • 



• • 



1 



3 

 4 



.22% 

 .67% 

 •89% 



The similarity of these per cents is 



and 



me 



For comparison with this I had selected at random from 

 the indices of the several phanerogamous volumes of Die 

 Natiiilichen Pflanzenfamilien, 330 genera, the distribution 

 of the species of these tabulated and the average number 



in each region obtained. These 



genus 



of species per 

 averages are based upon too small a series to be of great 

 value for comparison, but an estimate of the number of 

 species for each region made on the basis of the number 

 of genera occurring and the average number of species per 

 genus, as shown by the sample selected, indicates that there 



is not the wide difference in the floras 



g e 



that is 



shown by the special forms under consideration. 



om 



unmistakable. We 



now apply 



method 



comparison to the two other floral types considered in this 



paper 



To the Dilleniaceous type have beea assigned 16 genera 



