IN THE SERIES OF RESEARCH BULLETINS OF THE UNIVERSITY 



BULLETINS FROM THE 



LABORATORIES OF NATURAL 

 HISTORY 



EDITORIAL STAFF 



Charles C. Nutting Zoology 



George F. Kay Geology 



BOHUMIL SHIMEK Botany 



VOLUME VII NUMBER 2 



CONTENTS 

 The plant geography of the Lake Okoboji region 



BOHUMIL SHIMEK 



Professor and Head of the Department of Botany, University of Iowa 



PUBLISHED BY THE UNIVERSITY 

 IOWA CITY. IOWA 



