284 IOWA ACADEMY OF SCIENCE Vol. XXVI, 1919 



Fumariaceae. 

 DICENTRA. 



D. CHCiillaria : river banks ; rich woods. 



CORYDALUS.. 

 C. aurea : river bank. 



Cruciferae. 

 (Draba caroUniana: just over the line in Floyd county.) 



LEPIDIUM. 

 P. apetalum : common weed. 



CAPSELLA. 

 C. Bursa pastoris : common weed. 



BRASSICA. 



B. arvensis: common weed. 

 B. Juncea : common weed. 



B. nigra : common weed. 



CONRINGIA. 



C. orientalis: corner of 11th and Pleasant streets; 1114 State 

 street. Doubtless introduced in chick feed. 



SISYMBRIUM. 



S. officinale. 



ERYSIMUM. 



E. cheiranthoides : Pierce's bridge. 



E. aspernm : Simpson farm in Lincoln township. 



RADICULA. 



R. Nasturiium aquaticum: Spring Park. 

 R. pahtstris var. hispida : Pelton's woods. 



lODANTHUS. 



I. piyinatijidns: Middle bridge. 



DENTARIA. 



D. lacinlata: common in moist woods. 



CARDAMINE. 



C. bullosa : Spring Park. 



C. Douglassii: Orchard, Iowa. 



