School and College Edition. 



M ^ I^^ TJ -^ L 



BOTANY 



NORTHERN UNITED STATES. 



EEVISED EDITION; 



INCLUDING 



VIRGINIA, KENTUCKI, AND AH EAST OF THE MISSISSIPPI; 



AREANSED 

 AOOOEDING TO THE NATURAL SYSTEM. 



By ASA GRAY, 



FISHEK PK0FES90R OR NATUEAL HISTOKT IN HARVARD UNIVERSITY. 



ILLUSTEATING THE GENEEA OF PEENS, ETC. 



NEW YORK: 

 G. P. PUTNAM & Co., AND IVISON & PHINNRY, 

 3 2 1 BROADWAY. 



IBS'?. 



