IOWA ACADEMY OF SCIENCES. 139 



M. sylvestris L. Shelby and Johnson Cos. Waste places, 

 infrequent. 



Callirrhoe involucrata Gray. Shelby Co. Open woods, com- 

 mon locality. 



Sida spinosa L. Decatur, Van Buren, Henry, and Des Moines 

 Cos. Waste places, frequent. 



Abutilon avicennce Gaertn. Decatur, Appanoose, Wapello, 

 Van Buren, and Johnson Cos. Fields and waste places, com- 

 mon 



Hibiscus militaris Cav. Johnson Co. Borders of ponds, fre- 

 quent. 



H. trionum L. Decatur, Appanoose, Van Buren, and Wapello 

 Cos. Waste ground, frequent. 



TILIACE^E. 



Tilia americana L. Decatur, Appanoose, Van Buren, Des 

 Moines, Shelby, and Johnson Cos. Rich soil, frequent. 



LINACE^E. 



Linum sulcatum Riddell. Decatur, Appanoose, and Van 

 Buren Cos. Prairies, frequent. 



L. usitatissimum L. Decatur, Wayne, Des Moines, and John- 

 son Cos. Waste places, frequent. 



GERANIACE^E. 



Geranium maculatum L. Decatur and Johnson Cos. Rich 

 woods, common. 



G. carolinianum L. Johnson Co. Frequent locally. 



Oxalis violacea L. Page, Decatur, Des Moines, Shelby, and 

 Johnson Cos. Fields, common. 



corniculata stricta Sav. Page, Decatur, Appanoose, 

 Wapello, Van Buren, Des Moines, and Johnson Cos. Woods 

 and waste places, common. 



Impatiens pallida Nutt. Decatur, Appanoose, Des Moines, 

 and Johnson Cos. Wet woods, frequent. 



I. fulva Xutt. Decatur, Appanoose, Van Buren, Des Moines, 

 and Johnson Cos. With the preceeding, less frequent. 



RUTACE^E. 



Xanthoxylum an ericanum Mill. Decatur, Shelby, and Johnson 

 Cos. Woods, common. 



