■ \A(o 



abf Hntapratty of JHttmpsota 



AGRICULTURAL EXPERIMENT STATION 

 BULLETIN 139 



MINNESOTA WEEDS 



SERIES II 



DESCRIPTIONS and IDEXTIFICATIOXS 



BY 

 W. L. OSWALD 



ASSISTANT BOTANIST, DIVISION OF PLANT PATHOLOGY AND BOTANY 



AND 



ERADICATION 



BY 

 ANDREW BOSS 



CHIEF OF DIVISION OF AGRONOMY AND FARM MANAGEMENT 



t 



UNIVERSITY FARM, ST. PAUL 

 MAY 1914 



