FIELD MUSEUM OF NATURAL HISTORY. 



PUBLICATION 204. 

 BOTANICAL SERIES. VOL. IV, No. 2. 



BY 



CHARLES FREDERICK MILLSPAUGH 



AND 

 EARL EDWARD SHERFF. 



CHARLES FREDERICK MILLSPAUGH 

 Curator, Department of Botany. 



CHICAGO, U. S. A. 

 April, 1919. 



Dup. 



