FIELD BOOK OF 

 WESTERN 

 WILD FLOWERS 



BY MARGARET ARMSTRONG 



IN COLLABORATION WITH 



J. J. THORNBER, A.M. 



PROFESSOR OF BOTANY IN THE UNIVERSITY OF 



ARIZONA, AND BOTANIST OF THE ARIZONA 



AGRICULTURAL EXPERIMENT 



STATION AT TUCSON 



WITH FIVE HUNDRED ILLUSTRATIONS IN BLACK 

 AND WHITE, AND FORTY-EIGHT PLATES IN COLOR 

 DRAWN FROM NATURE BY THE AUTHOR : , , 



G. P. PUTNAM'S SONS 

 Ube Ikntcfeerbocfeer press 



NEW YORK AND LONDON 

 1915 



