U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF PLANT INDUSTRY— BULLETIN NO. 33. 



B. T. GALLOWAY. Chief of Bureau. 



NORTH AMERICAN" SPECIES OF LEPTOCHLOA. 



BY 



A. S. HITCHCOCK, 



Assistant Agrostologist, in Charge of Cooperative 

 Experiments, 



GRASS AND FORAGE PLANT INVESTIGATIONS. 



(Issued February 10, 1903. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1903. 



