224 IOWA ACADEMY OF SCIENCES. 



265. /?. sepfcnfrioiialis Poir, Very common on low 



prairies; a variable plant. 

 Batrachium S. F. (Iray. 



266. J). (lirdricafiiin (Schrank) Wimm. {Ji'ainnH-nlns 



ciiriiiatus Sibtli.) Very rare; in a pond along 

 old C. M. k St. P. R. K., Estherville. 

 OxYGRAPHis Bunge. 



267. 0. cf/mbalaria (Pursh) Prantl. [JianmicuJus <'ijni- 



Jxdaria Pursh.) Frequent on low prairies. 

 Thalictrum L. 



268. T. purpurascens L. Meadow-rue. Woods and 



prairies; very common. 



BERBERIDACE^. 



Caulophyllum Michx. 



269. C. thalirfroides (L.) Michx. Blue Cohosh. Bare; 



woods west of Estherville. 



menispermace^. 

 Menispernum L. 



270. M. canadense L. Moonseed. Frequent in woods. 



papaverace^. 

 Sanguinaria L. 



271. S. canadensis L. Bloodroot. Common in woods. 

 BicucuLLA Adans. Dutchman's Breeches. 



272. B. CHCuliaria (L.) Millsp. (Dicentra cucnllarla 



Torr.) Low woods; common. 

 Capnoides Adans. 

 373. C. micranfhuni (Engelm.) Britton, (Con/dal/s 

 inirrantha Engelm.) Rare in dry soil; Esther- 

 ville and Iowa Lake^, 



CRUCIFER^. 



Lepidium L. Pepper-grass. 



274. L. cinjinieum L. Waste places; less frequent than 



the next. 



275. L. apef alnui WiWd. Very common, fields and road- 



sides. 



