BULLETIN OF THE UNIVERSITY OF IOWA. 



NEW SERIES NO. 21. PRICE FIFTY CENTS. 



Vol. V. No. 2. 



BULLETIN 



FROM THE 



LABORATORIES OF NATURAL HISTORY 



OF THE 



STATE UNIVERSITY OF IOWA. 



THE RANUNCULACE^E OF IOWA, . . . T. J. FitzpaTrick. 

 PYRAMIDULA SHIMEKII (PILS.) SHIM., . . . B. Shimek. 



IOWA PTERIDOPHYTA, B. Shimek. 



DESCRIPTIONS OF AMERICAN 



UREDINEsE, III, . . J. C. Arthur and E. W. D. How ay. 

 LOESS OF IOWA CITY AND VICINITY . . B. Shimek. 

 IOWA PTERIDOPHYTA {Continued). . . . B. Shimek. 



ADDENDA TO THE FLORA OF 



LINN COUNTY IOWA B. Shimek. 



PUBLISHED 



BY AUTHORITY OF THE REGENTS. 



IOWA CITY, IOWA 

 May, 1901. 



the university bulletins published by the university are issued 

 every six weeks during the academic year, at least six numbers 

 every calendar year. entered at thf post office at iowa city as 

 second class mail matter. 



