A SPRING FLORA 



FOR HIGH SCHOOLS 



HENRY C. COWLES, Ph.D. 



ASSOCIATE PROFESSOR OP PLANT ECOLOGY 

 IN THE UNIVERSITY OF CHICAGO 



AND 



JOHN G. COULTER, Ph.D. 



CRITIC TEACHER OF BIOLOGY 



UNIVERSITY HIGH SCHOOL. NORAaL. ILL. 



AUTHOR OF "plant LIFB AND PLANT USES*' 



AMERICAN BOOK COMPANY 

 NEW YORK CINCINNATI CHICAGO 



