SMITHSONIAN INSTITUTION 
UNEP E Dest ALES NATTONAL MUSEUM 
CONTRIBUTIONS 
FROM THE 
UNITED STATES NATIONAL HERBARIUM 
VoLuME 17, PART 6 
TROPICAL NORTH AMERICAN 
SPECIES OF PANICUM 
By A. S. HITCHCOCK and AGNES CHASE 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1915 
