IOWA ACADEMY OF SCIENCES. 137 



B. nigra Koch. Decatur, Appanoose, Johnson, Shelby, and 

 Van Buren Cos. Fields and waste places, common. 



B. alba Boiss. Decatur Co. Forms were found with bristly- 

 pods. This character, however, vari^ and the specimen^ may 

 be the preceding species. 



Capsella bursa-pastoris Moench. Page, Decatur, Van Buren, 

 Shelby, and Johnson Cos. Waste grounds, common. 



Lepidium virginicum L. Johnson Co. Waste ground, fre- 

 quent. 



L. intermedium Gray. Decatur, Appanoose, and Shelby Cos. 

 Waste places, common. 



Raphanus sativus L. Decatur Co. Occasionally an escape. 



CAPPARIDACE^. 



Polanisia tracJiysperma T. & G. Des Moines and Johnson 

 Cos. Sandy shores, frequent. Usually mistaken for P. grave- 

 olens Raf . 



CISTACE^. 



Helianthemum, canadense Mx. Decatur, Appanoose, Shelby, 

 and Johnson Cos. Prairies, frequent. 



Lechea major Mx. Decatur, Appanoose, and Johnson Cos. 

 Borders of woods, frequent. 



L. minor L. Johnson Co. Dry soil, frequent. 



L. tenuifolia Mx. Van Buren Co. Dry soil, frequent. 



VIOLACE^. 



Viola pedata JL. Decatur and Johnson Cos. Open woods, 

 frequent. 



V. pedatifida G. Don. Decatur, Shelby, Page, and Johnson 

 Cos. Woods and fields, common, especially southward. 



F. palmata L. Decatur and Appanoose Cos. Damp soil, 

 fields and woods, common. 



V. palmata cucullata Gray. Decatur, Wapello, Van Buren, 

 Des Moines, Shelby, Page, and Johnson Cos. Fields and 

 woods, common. 



V. sagittata Ait. Johnson Co. Woods, frequent locally. 



V. pubescens Ait. Decatur, Shelby, and Johnson Cos. Rich 

 woods, frequent. 



