SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 



CONTRIBUTIONS 



FROM THE 



iiTED States National Herbarium 



Volume 17, Part 6 



TROPICAL NORTH AMERICAN 

 SPECIES OF PANICUM 



By A. S. HITCHCOCK and AGNES CHASE 





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p^i* yoRi 



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WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1915 



