136 IOWA ACADEMY OF SCIENCES. 



PAPAVERACEiE. 



Sanguinaria canadensis L. Decatur, Appanoose, Shelby, and 

 Johnson Cos. Rich woods, common. 

 Argemone mexicani L. Johnson Co. Rarely an escape. 



PUMARIACE^. 



Dicentra cucullaria DC. Decatur, Appanoose, Shelby, Page, 

 and Johnson Cos. Rich woods, common. 



Gorydalis curvisiliqua Englm. Page and Henry Cos. Prob- 

 ably not frequent. Has been labeled C. aurea Willd, and also 

 the variety occidentalis Englm. 



CRUCIFER^. 



Dentaria laciniata Muhl. Decatur, Shelby, and Johnson Cos. 

 Rich woods, frequent. 



Cardamine rhomboidea DC. Decatur, Shelby, and Johnson 

 Cos. Wet grounds, common. 



C. rhomboidea purpurea. Johnson Co. 



G. hirsuta L. Decatur and Johnson Cos. We t soil, fre- 

 quent. 



Arabis dentata T. & G. Henry Co. 



A. canadensis L. Decatur Co. Woods, infrequent. 



A. confinis Watson. Johnson Co. Woods, common. 



Draba caroliniana Walt. Johnson Co. Rocky banks, fre- 

 quent. 



Nasturtium palustre DC. Decatur, Van Buren, Shelby, and 

 Johnson Cos. Wet places, common, 



N. obtusum Nutt. Decatur Co. In fields, infrequent. 



N. armoracia Pries. Page, Decatur, Shelby, and Johnson 

 Cos. Near dwellings, frequent. 



'N. sessiliflorum Nutt. Van Buren Co. Frequent along Des 

 Moines river. 



Barbarea vulgaris R. Br. Shelby Co. Cultivated fields, 

 infrequent. 



Erysimum cheiranthoides L. Johnson Co. Banks, common. 



Sisymbrium canescens Nutt. Decatur, Page, and Johnson Cos. 

 Woods, frequent. 



*S^. offidnale Scop. Desatur, Shelby, and Johnson Cos. Waste 

 places, common, 



Brassica sinaplstrum Boiss. Decatur and Johnson Cos. Waste 

 places, infrequent. 



