122 IOWA ACADEMY OF SCIENCES. 



A. Nov(c-Ang/i(v L. 



Turin, borders of woods, common; South Dakota, opposite 

 Hawarden, few specimens near spring (L. H. P.); 

 Sir ux City (B. W.). 

 A. sericeus Vent. 



Sioux Rapids, prairies, Turin, Missouri Valley, abundant 

 over loess mounds (L, H. P.); Sioux City (B. W.). 

 A. sagittifolius Willd. 



Turin, low grounds (L. H. P.). 

 A. ericoides L. 



Turin, low grounds (L. H. P.). 

 A. multiflorus Ait. 



Missouri Valley, open places, woods (L. H. P.); Sioux 

 City (B. W.). 

 A. ixmindatus Lam. 



Sioux City, bottoms (L. H. P.); A. ptarmicoides, Torr. & 

 Gray. Little Rock, prairies (Herb. C. R. Ball). 

 Erigeron Canadensis L. 



Sloux City (B. W.); a weed in fields and pastures through- 

 out western Iowa (L. H. P. observations). 

 E. strigosus Muhl. 



Rock Valley (W. Newell, J. P. Jensen); Little Rock, 

 prairies (Herb. C. R. Ball). 

 E. Pliiladelplikiis L. 



Hull (W. Newell); Sioux City (B. W.). 

 Antennaria j)lantaginifolia. Hook. 



Sioux City (B. W.). 

 Silphhim laciniatuin L. 



Council Bluffs, common around loess mounds (L. H P.); 

 Sioux City (B. W.). 

 S. iJerfoliatum L. • 



Sioux City (B. W.). 

 Iva xanthufolia Nutt. 



Sioux City (B. W., L. H. P.): Onawa L. H. P.); Smith- 

 land (J. M. Wrapp). An extremely abundant weed 

 everywhere in western Iowa, growing luxuriantly ten 

 to twelve feet high in streets, vacant lots, dooryards, 

 and around neglected buildings, etc. 

 Ambrosia trijida L. 



Smithland (J. M. Wrapp); Sioux City (B. W.). A common 

 weed aiong creeks and river courses in western Iowa 

 (L H. P.). 



