School and College Edition. 



M A. 1ST TJ A. 



BOTANY 



NORTHERN UNITED STATES. 



REVISED EDITION-; 



INCLUDING 



VIRGINIA. KENTUCKY, AND ALL EAST OF THE MISSISSIPPI; 



ARRANGED 



ACCORDING TO THE NATURAL SYSTEM. 



BY ASA GRAY, 



FISHER PROFESSOR OF NATURAL HISTORY. IN HARVARD UNIVERSITY. 



ILLUSTRATED ? THE ^ENEK.A J)^ FEKNS, ETC. 



NEW YORK: 



IVIS01S & PHINNEY, 48 & 50 WALKER ST. 

 CHICAGO: S. C. GRIGGS & CO., 39 & 41 LAKE ST. 



CINCINNATI : MOORE, WIL8TACH, KEYS A CO. ST. LOUIS : KKITJI k WOOD*. 



PHILADELPHIA; SOWKR, BARNKS & co. BUFFALO: PHINNKY k oo. 



NKWBURG : T. 6. QUAOKBNBUSU. 



1859. 



