122 IOWA ACADEMY OF SCIENCES. 



A. Novce-Ajiglice L. 



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

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

 Sioux City (B. W.). 

 A. sericeus Vent. 



Sioux Rapids, prairies, Turin, Missouri Valley, abundant 

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

 A. sagittifoUus Wilid. 



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

 A. ericoides 'Li. 



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

 A. multijforiis Ait. 



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

 City (B. W.). 

 A. panicKlatns Lam. 



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

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

 Erigeron Gcmadensis L. 



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

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

 E. strigosus Muhl. 



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

 prairies (Herb. C. R. Ball). 

 E. Pldladdphicus L. 



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

 Antennaria })lanfaginifolia Hook. 



Sioux City (B. W.). 

 Silpldmn laciniatum L. 



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

 Sioux City (B. W.). 

 S. perfoliatum L. 



Sioux City (B.W.). 

 Iva xanthiifolia 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 arouad neglected buildings, etc. 

 Amhromi trijida L. 



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

 weed along creeks and river courses in western Iowa 

 (L. H. P.). 



