IOWA ACADEMY OF SCIENCES. 149 



A. novce-anglicB L. Decatur and Johnson Cos. Woods, fre- 

 quent. 



A. prenanthoides Muhl. Johnson Co. Woods, frequent. 



A. salicifolius Ait. Decatur, Henry, and Johnson Cos. Cop- 

 ses, open places, frequent. 



A azureus Lindl. Decatur, Appanoose, and Johnson Cos. 

 Woods and prairies, common. 



.4. cordifolius L. Decatur and Johnson Cos. Woods, infre- 

 quent. 



A. sagittifolius Willd. Johnson and Decatur Cos. Woods 

 frequent. 



A. Icevis L. Decatur Co. Woods, open places, common. 



A. diffusua Ait. Decatur Co. Low woods, common. 



Erigeron bellidifolius Muhl. Johnson Co. Woods, infrequent. 



E strigoms Muhl. Shelby and Johnson Cos. Fields and 

 waste places, common. 



E. philadelphicus L. Decatur, Shelby, and Johnson Cos. Rich 

 woods, frequent. 



E. divaricatus Mx. Decatur, Appanoose, and Johnson Cos. 

 Dry soil, pastures, common. 



E. canadense L. Decatur and Appanoose Cos. Waste places, 

 common. 



E. annuus~Pers. Appanoose, Shelby, and Johnson Cos. Waste 

 places, common. 



Antennariaplantaginifolia Hook. Decatur, Appanoose, Shelby, 

 Page, and Johnson Cos. Meadows and upland woods, common. 



Anaphalis margaritacea Benth. & Hook. Decatur and John- 

 son Cos. Dry woods, frequent. 



Inula helenium L. Johnson Co. Open woods, frequent 

 locally. 



Polymnia canadensis L. Des Moines Co. Along cliffs, fre- 

 quent. 



Silphium perfoliatum L. Decatur, Van Buren, Des Moines, 

 Shelby, and Johnson Cos. Low grounds, frequent. 



8. integ rifolium Mx. Decatur, Appanoose, Van Buren, and 

 Johnson Cos. Prairies and open woods, frequent. 



S. laciniatum L Decatur, Appanoose, and. Johnson Cos. 

 Prairies, common. 



Parthenium integ rifolium L. Decatur, Appanoose, and John- 

 son Cos. Prairies, common. 



Ambrosia artemisce folia L. Decatur, Appanoose, Wapello, 

 Van Buren, and Johnson Cos. Waste places, very common. 



