IOWA ACADEMY OF SCIENCES. 187 



Liatris punctata Hook. Fremont county. Loess hills; 

 common. 



L. scariosa Willd. Ringgold and Fremont counties. Prai- 

 ries; common. 



L. jn/cnostacJii/a Mx. Ringgold, Taylor, and Page counties. 

 Prairies; common. 



L. squarrosa Willd. Taylor and Page counties. Prairies; 

 common. 



GrindeUa squarrosa DmidA. Fremont county. Waste places; 

 frequent. 



SoUdago rig Ida L Fremont county. Woods; frequent. 



S. ulmifolia Muhl. Taylor county. Woods; frequent. 



S. missouriensis Ait. Ringgold, Page, Fremont, Decatur, 

 and Johnson counties. Upland woods; frequent. 



*S'. serotina Ait. Taylor county. Low places; common. 



Boltonia asteroides L'Her. Ringgold and Taylor counties. 

 Wet soil; frequent. 



Aster sericeus Vent. Ringgold, Taylor, Page, Fremont, Mont- 

 gomery, and Pottawattamie counties. Prairies; common. 



A. multifloniH Ait. Ringgold and Taylor counties. Way- 

 sides; frequent. 



A. Icevis L. Johnson county. 



Erigeron strigosus Muhl. Clarke county. Fields; common. 



E.divaricatus Mx. Ringgold and Fremont counties. Pastures; 

 common. 



E. canadensis Ij. Page and Fremont counties. Waste places; 

 common. 



E. annuus Pers. Union and Pottawattamie counties. Waste 

 places; common 



SilphiiDii perfoliatum L. Ringgold, Taylor, Page, Fremont, 

 Montgomery, and Pottawattamie counties. Low places; fre- 

 quent. 



S. integrifolium Mx. Ringgold, Taylor, Page, Fremont, 

 Montgomery, and Pottawattamie counties. Prairies; common. 



S. laciniatum L. Clarke, Union, Adams, Fremont, Mont- 

 gomery, and Pottawattamie counties. Prairies; common. 



Parthenium integrifolium L. Ringgold county. Prairies; 

 common. 



Iva xanthiifolia Nutt. Fremont county. River bottoms; 

 common. 



Ambrosia artemisicefolia L. Clarke, Union, Adams, Montgom- 

 ery, Pottawattamie, Ringgold, Taylor, Page, and Fremont 

 counties. Waste places; common. 



