MANUAL 



OF 



TH E BOTANY 



OF THE 



NORTHERN UNITED STATES, 



INCLUDING THE DISTRICT EAST OF THE MISSISSIPPI AND 

 NORTH OF NORTH CAROLINA AND TENNESSEE. 



-1 



BY ASA GRAY, 



LATE FISHER PROFESSOR OF NATURAL HISTORY IN HARVARD UNIVERSITY. 



5tiitton. 



REVISED AND EXTENDED WESTWARD TO THE 1 00th MERIDIAN, 



BY - 



SERENO WATSON, - 



CURATOR OF THE GRAY HERBARIUM, HARVARD UNIVERSJTV* " 

 AND . . 



JOHN M. COULTER, 



PROFESSOR OF BOTANY IN WABASH COLLEGE, < 



ASSISTED BY SPECIALISTS Iff CERTAIN GROUPS,' 



' 



WITH TWENTY-FIVE PLATES, 



ILLUSTRATING THE SEDGES, GRASSES, FERNS, ETC. 



NEW YORK I CINCINNATI : CHICAGO 



AMERICAN BOOK COMPANY 



FROM THE PRESS OF 

 IVISON, BLAKEMAN & COMPANY 



