Agros, 46. 
BULLETIN No. 18. 
U. S. DEPARTMENT OF AGRICULTURE. 
DIVISION OF AGROSTOLOGY. 
[Grass and Forage Plant Investigations. 
STUDIES 
ON 
AMERICAN GRASSES. 
A SYNOPSIS OF THE GENUS SITANION. 
BY 
JARED G. SMITH. 
PREPARED UNDER THE DIRECTION OF F. LAMSON-SCRIBNER, AGROSTOLOGIST, 
24, 1899. 
ISSUED JUNE 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1899. 
