U.S. DEPARTMENT OF AGRICULTURE. 
DIVISION OF BOTANY. 
CONTRIBUTIONS 
. FROM 
THE U. 8. NATIONAL HERBARIUM. 
Vol. Hl. No. 14. 
ISSUED FEBRUARY 25, 1892. 
MONOGRAPH OF THE GRASSES OF THE UNITED STATES AND 
BRITISH AMERICA. 
BY 
DR. GEO. MISSOESR; 
BoT AWNTisc A. 
BOTANIST, DEPARTMENT OF AGRICULTURE, pea ee oo 
PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
