MANUAL 



OF THE 



BOTANY 



NORTHERN UNITED STATES, 



INCLUDING 



VIRGINIA, KENTUCKY, AND ALL EAST OF THE MISSISSIPPI. 



BY ASA GRAY, 



FISHER PEOFESSOE OF NATUEAL HISTORY IN HARVAED CXIYERSTTY. 



(THE MOSSES AND LIVERWORTS BY WM. s. SULLIVANT.) 



FOTIETH EEVISED EDITION. 



TO WHICH IS ADDED 



GARDEN BOTANY, 



AN INTRODUCTION TO A KNOWLEDGE OP THE COMMON CULTIVATED 



PLANTS. 



WITH TWENTY-TWO PLATES, 



ILLUSTRATING THE GENERA OP THE GRASSES, FERNS, 

 MOSSES, ETC. 



NEW YORK: 

 IVISON, PHINNEY, BLAKEMAN & CO., 



CHICAGO : & C. GRIGG3 & CO. 



. UNIVERSITY 



OF 



