IOWA ACADEMY OP SCIENCES. 171 



Glyceria nervata Trin. Decatur, Shelby, and Johnson Cos. 

 Low prairies, common. 



Festuca tenella Willd. Johnson Co. 



F. shortii Kunth. Decatur Co. Low prairies, common. 



Bromus secalinus L. Decatur and Johnson Cos. Fields and 

 waste places, frequent. 



B. ciliatus L, Decatur Co. 



B. ciliatus purgans Gray. Decatur, Appanoose, and Johnson 

 Cos. Rich woods, frequent. 



Agropyrum repens Beauv. Decatur Co. Waste places, fre- 

 quent. 



A. spicatum (Pursh.) Scribn. & Smith. Shelby Co. 



Hordeum jubatum L. Decatur, Shelby, and Johnson Cos. 

 Waste places, common. 



H. j)ussilum Nutt. Decatur and Johnson Cos. Waste places, 

 becoming frequent. Johnson Co. specimens collected by Pro- 

 fessor Shimek. 



Elymus canadensis L. Decatur, Appanoose, Wapello, Des 

 Moines, and Johnson Cos. Prairies and river banks, common. 



E. striatus Willd. Johnson Co. Woods, frequent. 



E. virginicus L. Decatur, Appanoose, and Johnson Cos. 

 Prairies and woods, common. 



Asprella hystrix Willd. AjDpanoose and Johnson Cos. Woods, 

 frequent. 



EQUISETACE^. 



Equiseium arvense L. Decatur, Des Moines, Shelby, and 

 Johnson Cos. Moist soil, frequent. 



E. hyemale L. Decatur, Appanoose, Des Moines, and John- 

 son Cos. Wet places, frequent. 



E. Icevigatum Braun. Shelby Co. Fields and waysides, com- 

 mon. 



FILICES. 



Adiantum p>^datum L. Decatur, Appanoose, Van Buren, 

 Shelby, and Johnson Cos. Rich woods, common. 



Pteris aquilina L. Upland woods, frequent. 



Pellcea atropurpurea Link. Johnson Co. Cliffs, frequent. 



Asplenium filix-fannina Bernh. Decatur, Appanoose, Shelby, 

 and Johnson Cos. Woods, common. 



Gamptosorus rhizophyllus Link. Johnson Co. Moist ravines, 

 frequent. 



