4 BWGHTS, orchids and PERNS 



examining some of my specimens, and to Prof. L. H. Pammel of the Iowa 

 Argicultural College and Prof. T. H. McBride of the Iowa State Uni- 

 versity, lor literature and information. 



The class laboratory work was a help and an incentive; to the work, 

 and I am obliged to Dr. M. Y. Baker and Dr. C. C. Parker, for the 

 loan of microscopes for class use. 



The works used are Pyrenomycetes of North America, by Ellis and 

 Kverhart; Erysiphecc of Illinois, by Dr. T.J. Burrill; Partial List of Iowa 

 Powdery Mildews, by Prof. A. S. "Hitchcock; The flights, by Dr. C. K. 

 Bessey, and the Host Index by Farlow and Seymour. 



Some of the plants herein recorded seem to be new to the flora of 

 Iowa and others are recorded for the first time so far as I am able to 

 ascertain. Statements will be found in connection with the lists. 



So far as I know, this is the first effort at a complete collection of 

 any orders of plants in this vicinity. It is hoped that this attempt will 

 prove to be an incentive to some one else to carry on similar work here. 



