ROCKY MOUNTAIN 

 FLOWERS 



AN ILLUSTRATED GUIDE FOR 

 PLANT-LOVERS AND PLANT-USERS 



WITH TWENTY-FIVE PLATES IN COLOR AND 

 TWENTY-TWO PLATES IN BLACK AND WHITE 



FREDERIC EDWARD CLEMENTS, Ph. D. 



Associate in Ecology, Carnegie Institution of Washington 

 Director of the Pike's Peak Alpine Laboratory 



AND 



EDITH SCHWARTZ CLEMENTS, Ph. D. 



FIELD EDITION 



LIBRA 

 NEW Y 

 BOTANIC. 



GARDEN 



THE H. W. WILSON COMPANY 

 NEW YORK 



1920 



