INTRODUCTION 



TO 



STRUCTURAL AND SYSTEMATIC 



BOTANY 



AND VEGETABLE PHYSIOLOGY, 



BEING 



A FIFTH AND REVISED EDITION 



OP 



THE BOTANICAL TEXT-BOOK, 



ILLUSTRATED WITH OVEK THIRTEEN HUNDRED WOODCUTS. 



By ASA GRAY, M.D., 



FISHER PROFESSOR OF NATURAL HISTORY IN HARVARD DNIVERSITT. 



NEW YORK: 



IVISON, PHINNEY, & CO., 48 & 50 WALKER STREET. 



CHICAGO: S. C. GRIGGS & CO., 39 & 41 LAKE STREET. 



PHILADELPHIA : SOWER, BARNES, & CO., AND J. B. LIPPINCOTT & CO. 



BOSTON : BROWN, TAGUARD, & CHASE. CINCINNATI : MOORE, WILSTACH, KEYS, & CO. 



SAVANNAH : J. M. COOPER & CO. NEW ORLEANS : BLOOMFIELD, STEEL, & CO. 



ST. LOUIS : KEITH & WOODS. DETROIT : F. RAi;.IOND & CO. 



1862. 



