224 
IOWA ACADEMY OF SCIENCES. 
265. R. septentrionalis Poir. Very common on low 
prairies; a variable plant. 
Batrachium S. F. Gray. 
266. B. divaricatum (Schrank) Wimm. (. Ranunculus 
circinatus Sibth.) Very rare; in a pond along 
o]d C. M. & St. P. R. R., Estherville. 
Ox ygr aphis Bunge. 
267. 0. cymbalaria (Pursh) Prantl. (. Ranunculus cgm- 
balaria Pursh.) Frequent on low prairies. 
Thalict.rum L. 
268. T. purpurascens L. Meadow-rue. Woods and 
prairies; very common. 
BERBERIDACEyE. 
Caulophyllum Michx. 
269. C. thalictroides (L.) Michx. Blue Cohosh. Rare; 
woods west of Estherville. 
MENISPERMACEAE. 
Menispernum L. 
270. M. cdnadense L. Moonseed. Frequent in woods. 
PAPAVE RACEME. 
Sanguinaria L. 
271. S. canadensis L. Bloodroot. Common in woods. 
Bicuculla Adans. Dutchman’s Breeches. 
272. B. cucullaria (L.) Millsp. ( Dicentra cuculiaria 
Torr.) Low woods; common. 
Capnoides Adans. 
873. C. micranthum (Engelm.) Britton, ( Cortjdalis 
micrantha Engelm.) Rare in dry soil; Esther- 
ville and Iowa Lake. 
CRUCIFERS. 
Lepidium L. Pepper-grass. 
274. L. virginicum L. Waste places; less frequent than 
the next. 
275. L. apetalum Willd. Very common, fields and road- 
sides. 
