IOWA ACADEMY OF SCIENCES. 19 



A. novce-anglice L. Winneshiek Co. 



A. azureus Lindl. Winneshiek Co. 



A. sagittifolius Willd. Winneshiek, Allamakee, Clayton, and 

 Dubuque Cos, 



Erigeron bellidifolius Muhl. Winneshiek Co. 



E. strigosus Muhl. Winneshiek Co. 



E. philadelphicus L. Winneshiek Co. 



E. canadensis L. Winneshiek, Allamakee, Clayton, and 

 Dubuque Cos. Fields and waste places, common. 



E. annuus Pers. Winneshiek, Allamakee, Clayton, and 

 Dubuque Cos. 



Antennaria plantaginifolia Hook. Winneshiek, Allamakee, 

 and Clayton Cos. Fields and open woods, common. 



Polymnia canadensis L. Winneshiek, Allamakee, Clayton, 

 and Dubuque Cos. Along the base of wooded cliffs, common. 



Silphium perfoliatum L. Winneshiek, Allamakee, and 

 Dubuque Cos. 



S. Ificiniatum L. Winneshiek, Allamakee, and Dubuque Cos. 

 Prairies and borders of woods, common. 



S. integrifolium Mx. Dubuque Co. 



Parthenium integrifolium L. Winneshiek, Allamakee, and 

 Dubuque Cos. Fields, frequent. 



Iva xanthiifolia Nutt. Winneshiek Co. Waste places, infre- 

 quent. 



Ambrosia artemisicefolia L. Winneshiek, Allamakee, Clay- 

 ton, Dubuque, and Jackson Cos. Fields and waste places, com- 

 mon. 



A. trijida L. Winneshiek, Allamakee, and Jackson Cos. 

 Damp soil, waste places, common. The var. integrifolia T. 

 G., frequently found. 



Xanthium canadense Mill. Winneshiek, Allamakee, Clay- 

 ton, Dubuque, Jackson, and Clinton Cos. Fields and waste 

 places, common. 



Heliopsis scabra Dunal. Winneshiek, Allamakee, and 

 Clayton Cos. Frequent. 



Budbeckia triloba L. Winneshiek and Dubuque Cos. Open 

 woods, frequent. 



B. hirta L. Winneshiek, Allamakee, Clayton, and Dubuque 

 Cos. Woods, frequent. 



B. laciniata L. Winneshiek Co. 



Lepachys pinnata T. & G. Winneshiek, Allamakee, Clay- 

 ton, and Dubuque Cos. Prairies, common. 



