170 IOWA ACADEMY OF SCIENCES. 



Tripsacum dactyloides L. Decatur and Appanoose Cos. 

 Sloughs, frequent locally. 



Andropogon furcatus Muhl. Decatur, Appanoose, and John- 

 son Cos. Prairies, common. 



Chrysopogon nutans Benth. Decatur Co. Prairies, frequent. 



Phalaris canariensis L. Johnson Co. An occasional escape. 



P. arundinacea L. Johnson Co. Wet soil, infrequent. 



Aristida oligantha Mx. Decatur Co. Dry soil, common. 



Stipa spartea Trin. Decatur, Shelby, and Johnson Cos. 

 Prairies, frequent. 



Muhlenbergia mexicana Trin. Johnson Co. Low places, fre- 

 quent. 



Phleum pratense L. Decatur, Appanoose, Shelby, and John- 

 son Cos. Cultivated, a frequent escape. 



Alopecurus geniculatus L. Johnson Co. Borders of ponds, 

 infrequent. 



Sporobolis cryptandrus Gray. Johnson Co. 



Agrostis alba L. Decatur Co. Meadows, common. 



A. perennans Tuck. Decatur Co. Frequent. 



Cinna arundinacea L. Johnson Co. 



Calamagrostis canadensis Beauv. Decatur Co. 



Bouteloua racemosa Lag. Decatur, Appanoose, and Johnson 

 Cos. Prairies, frequent. 



Triodia cuprea Jacq. Decatur and Van Buren Cos. Sandy- 

 soil near water courses, common. 



Koeleria cristata Pers. Decatur, Shelby, and Johnson Cos. 

 Prairies, frequent. 



Eatonia pennsylvanica Gray. Shelby and Johnson Cos, 



Eragrostis reptans Nees. Decatur, Van Buren, and Johnson 

 Cos. River banks, common. 



E major Host. Decatur and Johnson Cos. Waste places, 

 common. 



E. purshii Schrader. Decatur and Johnson Cos. Waste 

 places, frequent. 



Melica vmlica Walt. Johnson Co. Open woods, frequent. 



Diarrhena americana Beauv. Decatur Co. Frequent. 



DactyJis g/omerata L Decatur, Shelby, and Johnson Cos. 

 Orchards and waste places, frequent. 



Poa trivialis L. Shelby and Johnson Cos. Meadows and 

 borders, common. This is frequently mistaken for P. pra- 

 tensis L. 



