i6 



ROCHESTER ACADEMV OF SCIENCE. 



I Oct. 8, 



COMPA RA Til -E S TA TJS 7 ICS. 



To Professor Willia.m R. Dudley's Catalogue of "The Cayuga 

 Flora," published in 1886, we are indebted, in part, for the figures in 

 the three following tables : 



Plants of Monroe County, etc 1314 



The Cayuga Flora 1278 



Plants of Buffalo, etc. (with addenda) _ 1 243 



Plants of Oneida County, etc 1390 



Plants of Dutchess County T067 



Plants of Suffolk County. 852 



Flora of Washington, D. C, etc. . 1 2 1 1 



Flora of Essex County. — .. 1257 



Flora of Vicinity of Yale College. - ...-. 1238 



It should, perhaps, be said in explanation, that "Plants of Oneida 

 County and Vicinity," by John E. Paine, Jr , 1864, in reality covered 

 nearly the whole State, excepting the south-eastern and tlie Adiron- 

 dack regions; and that the "Plants of Buffalo and Vicinity," by the 

 Buffalo Society of Natural History, 1883, includes plants within a 

 radius of fifty miles of Buffalo. 



The following is a comparison of the larger orders: 



Order. 



CyperaceJE . . . . 

 Composita; .. . . 



Gramineic 



Rosaceic 



Leguminosa; . . 

 Raniinculacex' 



Orchidaccie 



Ericaceiu 



Cruciferiu 



Labiata; 



No. Species and Varieties. 



The above estimates for the eastern United States (E. U. S.) are 

 taken from Lester K. Ward's "Flora of Washington." 



The following table gives a comparison of two of the larger 

 genera, two of the representative Atlantic coast genera and a repre- 



