IOWA ACADEMY OF SCIENCES. 177 



C. intcheri T. & G. Union, Fremont, and Pottawattamie 

 counties. Thickets; frequent. 



Anemone cylindrica Gray. Union, Ringgold, Fremont, 

 Adams, Montgomery, and Pottawattamie counties. Prairies, 

 waysides; frequent. 



A. virglniana L. Ringgold, Page, and Fremont counties. 

 Woods; frequent. 



A. pemhsylvanica L. Ringgold and Pottawattamie counties. 

 Prairie; frequent. 



Thalictrum imrpurascens L. Union, Ringgold, Page, Taylor, 

 Fremont, Adams, and Pottawattamie counties. Open woods; 

 frequent. 



Ranunculus multifldus Pursh. Decatur county. A few speci- 

 mens found in a moist locality. 



Aquilegia canadensis L. Ringgold and Pottawattamie coun- 

 ties. Woods; common. 



Delphinium tricorneMx. Clarke, Union, and Decatur counties. 

 Fields and woods; moist places; common. Many specimens 

 were found with double flowers, the two upper petals, as usual, 

 and six others, the lower sepal spurred similar to the upper, 

 but with a smaller spur. Specimens with six or seven petals 

 were also found. 



D. azureum Mx Clarke, Union, Adams, Montgomery, and 

 Pottawattamie counties. Prairies; common. 



Memispermace.e. 



Menispermum canadense L. Union, Ringgold, Page, Taylor, 

 Fremont, and Pottawattamie counties. Woods; common. 



Berberidace^. 



Podophi/Uum peltatum L Union and Ringgold counties. 

 Rich woods; common. 



NYMPH^ACEyE. 



Nympluva tuberosa Paine. Fremont county. Common in 

 Wabonsie slough. 



Crucifer.^. 



Arabis canadensis L, Page county. Woods; infrequent. 



A. dentata T. & G. Decatur county. One specimen found. 



Nasturtium sinuatum Nutt. Fremont county. This species 

 is a very common weed in the Missouri river bottoms. 



N. sessiliflorum Nutt. Decatur and Page counties. Low, 

 wet places; frequent. 

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