UNIVERSITY OF NEBRASKA {/ 



DEPARTMENT OF BOTANY 



Charles E. Bessey, 



Professor, and Acting State Botanist. 

 Frederick E. Clements, First Assistant. 



Cornelius L. Shear, Second Assistant. 

 Clarence J. Elmore, Third Assistant. 



Edna L. Hyatt, Botanical Artist. LINCOLN, NEBRASKA, U.S.A. 



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