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A TEXT- BOOK OF-* 



}^ 



GRASSES ^ m I 



WITH ESPECIAL REFERENCE TO 



THE ECONOMIC SPECIES OF THE 



UNITED STATES 



0^ 



BY 



A. S. HITCHCOCK 



8TBTEMAT1C AGR08TOLOGI8T, UNITED STATES DEPARTMENT OF AGRICULTURE, 



WASHINGTON, D. C. ; FORMERLY PROFESSOR OF BOTANY IN THE 



KANSAS STATE AGRICULTURAL COLLEGE 



THE MACMILLAN COMPANY 

 1914 



All rights reserved 



