170 IOWA ACADEMY OF SCIENCES. 



Tripsacum dactyloides L. Decatur and Appanoose Cos. 

 Sloughs, fi-equent locally. 



Andropogon furcatus Muhl. Decatur, Appanoose, and John- 

 son Cos. Prairies, common. 



Ghrysopogon nutans Benth. Decatur Co. Prairies, frequent. 



Phalaris canariensis L. Johnson Co. An occasional escape. 



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



Aristida oUgantha 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. 



Sp07'obol:is 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. iJursMi Schrader. Decatur and Johnson Cos. Waste 

 places, frequent. 



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



Diarrhena americana Beaav. Decatur Co. Frequent. 



Dactylis glomerata 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. 



