FLORA OF NORTH AMERICA: 



CONTAINING 



ABRIDGED DESCRIPTIONS OF ALL THE KNOWN INDIGENOUS AND 

 NATURALIZED PLANTS GROWING NORTH OF MEXICO; 



ARRANGED ACCORDING TO 



THE NATURAL SYSTEM. 



B Y 



JOHN TORREY, M. D., F. L. S., «fec., 



MEMBER OF THE IMPERIAL ACADEMY NATURE CCRIOSORUM, ETC., AND PROFESSOR 



OF CHEMISTRY AND BOTANY IN THE UNIVERSITY OF 



THE STATE OF NEW-YOEK ; 



AND 



ASA GRAY, M. D., 



MEMBER OP THE IMPERIAL ACADEMY NATURES: CURIOSOBUM, ETC. ETC., 

 PROFESSOR OF BOTANY IN THE UNIVERSITY OF MICHIGAN. 



VOL. L 



COMPRISING THE POLYPET.iLOVS DIVISION OF THE 

 DICOTYLEDONOUS OR EXOGENOUS PLANTS. 



NEW-YORK: 



WILEY 6c PUTNAM. 



London : ^Viley & Putnam, 35 Paternoster Row. 



Paris : Bossange & Co. 11 Quai Voltaire. 



1838-1840. 

 NEW YORK 



