§otang for |fl»ng leogle an^ Cammon St^ook 



HOW PLANTS GROW, 



A SIMPLE INTRODUCTION TO STRUCTURAL BOTANY. 



AVITH 



A POPULAR FLORA, 



OR AN ARRANGEMENT AND DESCRIPTION OF COMMON PLANTS, 

 BOTH WILD AND CULTIVATED. 



ILLUSTRATED BT 500 WOOD ENGRAVINGS. 



By ASA GRAY, M.D., 



nSHER PROFESSOE OF MATOEAL HISTORY IN HARTARD DNIVERSITT. 



NEW YORK • : • CINCINNATI • : • CHICAGO 



AMERICAN BOOK COMPANY 



