IOWA ACADEMY OF SCIENCES. 185 



Onagkace.-e. 



Ludwigia polycarpa Short & Peter. Ringgold, and Taylor 

 counties. Shallow lakes; frequent. 



Gaura biennis L. Fremont county. Fields and waste 

 places; common. By a clerical error G. coccinea Nutt. was 

 given for this species in the last Academy report. The local- 

 ities for southern and. northeastern Iowa should be credited to 

 this species. 



G. parviflora Dougl. Fremont county. Base of loess hills 

 and in bottoms; frequent. 



Oenothera biennis L. Ringgold and Fremont counties. 

 Fields; common. 



Circcea lutetiana L. Page, Ringgold, Fremont, and Potta- 

 wattamie counties. 



CUCURBITACE^. 



Ediinocystis lobata. Taylor, Page, and Fremont counties. 

 Umbellifer.^. 



Cicuta maculata L. Ringgold, Taylor, and Fremont counties. 

 Moist places; common. 



Tiedemannia rigida Coult. & Rose. Ringgold county. Wet 

 sloughs; frequent. 



Heracleum lanatum Mx. Union and Pottawattamie counties. 

 Rich woods; common. 



Pastinaca sativa L. Decatur, Clarke, Union, Adams, Ring- 

 gold, Taylor, Page, Fremont, and Johnson counties. Waste 

 places; common. 



Piiiipinella integerrima. Union county. Woods; frequent. 



Point cenia nuttaUii DC. Ringgold and Montgomery counties; 

 prairies; a few specimens found. 



Crijptotxenia canadensis DC. Union, Ringgold, and Potta- 

 awattamie counties; woods; common. 



Sium Gicutiefolium Gmelin. Ringgold county; wet soil; f re 

 quent. 



Zizia aurea Koch. Johnson and Page counties; low grounds; 

 common. 



Osmorrhiza brevistylis DC. Fremont county; woods; frequent. 



0. longistylis DC. Fremont county; woods; frequent. 



Eryngium yacccefolium Mx. Montgomery, Pottawattamie, 

 Ringgold, Taylor, and Page counties; prairies; common. 



Sanicula marylandica L. Ringgold and Pottawattamie 

 counties; woods; common. 



