TABULAR VIEW OF THE FAMILIES 



27 



SUMMARY BY DIVISIONS, CLASSES, ETC. 



SUMMARY BY MINOR GROUPS 



Families ................ 187 



Genera native ...... 821 



introduced .... 180 



total .......... 1001 



Species native ...... 8418 



introduced .... 666 



total .......... 4079 



Varieties, named 

 forms, etc. native ...... 766 



introduced .... 40 



total .......... 806 



Whole number of different plants (species, varieties, and named forms) treated in 

 this work . 



