GRAY'S NEW MANUAL OF BOTANY 



(SEVENTH EDITION ILLUSTRATED) 



A HANDBOOK OF THE 



FLOWERING PLANTS AND FERNS 



OF THE CENTRAL AND NORTHEASTERN UNITED STATES 

 AND ADJACENT CANADA 



REARRANGED AND EXTENSIVELY REVISED BY 



BENJAMIN LINCOLN ROBINSON 



ASA GRAY PROFESSOR OP SYSTEMATIC BOTANY IN HARVARD UNIVERSITY 



AND 



MERRITT LYNDON FERNALD 



ASSISTANT PROFESSOR OF BOTANY IN HARVARD UNIVERSITY 



NEW YORK .: CINCINNATI : CHICAGO 



AMERICAN BOOK COMPANY 



