sic ix 



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|<HQ SMITHSONIAN INSTITUTION 



-CUNITED STATES NATIONAL MUSEUM 



CONTRIBUTIONS 



FROM THE 



United States National Herbarium 



Volume 15 



THE NORTH AMERICAN SPECIES 

 OF PANICUM 



By A. S. HITCHCOCK and AGNES CHASE 



WASHINGTON 

 GOVERNMENT PRINTING OFFICE 



1910 



