14 ROCHESTER ACADEMY OF SCIENCE. [Oct. 8, 



berry, papaw and tulip-tree are rare. Red cedar is found on the hills 

 and the river bank, but is rare. Black spruce is found occasionally in 

 swamps, but is scarce. 



Statistics of the Flora. 



The important groups and species in our flora will appear in the 

 following tables, which in all cases include only phanerogams. 



The .list includes several groups of specific and varietal names, 

 which are tabulated as follows : 



Species native to the Monroe Flora 948 



Species introduced to the Monroe Flora 250 



Total number of species . 1198 



Varieties — native 1 03 



introduced 1 t, 



Total of numbered species and varieties. 1314 



Species spontaneous but not established 36 



The total number of species and varieties reported in Monroe 

 county is 1208. In the other counties represented in the list, 106 

 species are reported which, up to the present time, have not been 

 found in Monroe county. 



In all the following tables the numbered forms only are included. 



5 ] 'S TEMA TIC DIS TRIE U TION. 



The native and introduced species and varieties in this flora may 



be tabulated as follows : 



r. Species and 



Genera - Varieties. 



Polypetalae 167 393 



Gamopetalre 158 385 



Apetalae 43 r 34 



Total Dicotyledones 368 912 



Monocotyledones 116 390 



Gymnospermce - - 8 12 



Total Phoenogamia 49 2 T 3*4 



LEADING ORDERS. 



The following table shows the number of genera, species and 

 varieties in some of the most largely represented orders : 



