132 IOWA ACADEMY OF SCIENCES. 



Setaria glauca Beauv. Winneshiek, Clayton, and Dubuque 

 Cos. Waste places, common. 



S. viridis Beauv. Winneshiek and Clayton Cos. Waste 

 places, common. 



Cenchrus tribuloides L. Dubuque Co. Sandy soil, frequent. 



Andropogon furcatus Muhl. Allamakee Co. 



St I pa spartea Trin. Winneshiek Co. Prairies, frequent. 



Phleum pratense L. Winneshiek, Allamakee, Clayton, and 

 Dubuque Cos. Cultivated and frequent in waste places. 



Bouteloua racemosa Lag. Allamakee Co. Waysides, frequent. 



Kceleria cristata Pers. Winneshiek and Allamakee Cos. 

 Waysides, frequent. 



Eragrostis major Host. Winneshiek and Dubuque Cos. 

 Sandy soil, frequent. 



E. frankil Meyer. Winneshiek Co. Sandy soil. 



Melica mutica Walt. Winneshiek Co. 



Poa pratensis L. Winneshiek, Allamakee, and Dubuque Cos. 

 Dry soil, pastures, waysides, common. 



Olyceria arundinacea Kunth. Winneshiek Co. Margins of 

 ponds, wet ground, frequent. 



Bromus kalmii Gray. Winneshiek Co. Fields, infrequent. 



B secalinus L. Winneshiek Co. Fields and waste places, 

 frequent. 



B. ciliatu8 L., var. purgans Gray. Winneshiek, Allamakee, 

 and Jackson Cos Rich upland woods, frequent. 



Agropyrum repens (L.) Beauv. Winneshiek Co. Dry soil, 

 frequent. 



Hordeum jubatum L. Winneshiek, Clayton, and Scott Cos. 

 Dry fields, common. 



Elymus canadensis L. Winneshiek, Allamakee, Clayton, and 

 Dubuque Cos. Prairies and low grounds, common. 



E. striatus Willd. Allamakee Co. 



Asprella hystrix Willd. Winneshiek, Clayton, and Dubuque 

 Cos. Upland woods, frequent. 



EQUISETACE^E. 



Equisetum arvense L. Winneshiek and Allamakee Cos. Wet 

 soil, frequent. 



E hyemale L. Allamakee Co. Wet places, frequent. 

 E. Icevigatum Braun. Waysides and fields, frequent. 



