lOVv'A ACADEMY OF SCIENCES. 123 



A. artemisiaefolia L. 



Alton, Turin (L H P.); Sioux City (B. W.). A common 

 weed in cultivated fields, pastures, meadows, along 

 roadsides, vacant lots, and railroads. 

 A. 2)silostachya DC. 



Council Bluffs, common weed along creeks and river 

 courses in western Iowa (L. H. P.). 

 Xanthium Ccmadense Mill. 



Sioux City, Turin (L. H. P.). In alluvial soil very abun- 

 dant and weedy. South Dakota, opposite Hawarden, 

 bottoms of Big Sioux river (L. H P.). 

 Heliojjsis scabra Dunal. 



Sioux City (B. W.); Hull (W. Newell); Battle Creek, in 

 woods (E. G. Preston); Little Rock (Herb. C. R. Ball). 

 Echinacea angustifoUa DC. 



Sioux City (B. W.); Hull (W. Newell); Battle Creek, 

 abundant prairies (E. G. Preston); Council Bluffs, 

 Logan (L. H. P ); Little Rock (Herb , C. R. Ball). 

 Ruclbeclda lacin'tata L. 



South Dakota, opposite Hawarden in w^oods abundant (L. 

 H. P.); Sioux City (B. W.). 

 R. triloba L. 



Onawa, low grounds, common (L. H. P.) 

 R. Jiirta L. 



Sioux City (B. W.) Little R^ck (Herb. C. R. Ball ). 

 Lepachys jnnnata Torr. & Gray. 



Sioux City (B. W.) Council Bluffs (L. H. P.). 

 Helianthus annuus L. 



Sioux City (B. W.); Hawarden (L. H. P.); Ouawa, Mis- 

 souri Valley, (L. H. P.). A common weed everywhere 

 in western Iowa, flood plains, Missouri and Big Sioux 

 rivers, streets and dooryards. (L. H. P.). 

 H. rigidus Desf. 



Hawarden (L H. P.); Sioux City (B. W.). 

 H. grosse-serratus Martens. 



Sioux City, abundant in alluvial bottoms of Missouri river, 

 and along river courses, creeks (L. H. P., B. W.); Onawa, 

 Turin. One of the most conspicuous plants iu September. 

 E. Maximiliani Schrad. 



Sioux City, Loess hills along the Missouri and Big Sioux 

 rivers. Alton, Sioux Rapids, Hawarden, occasionally in 

 alluvial bottoms at Whiting; also observed near Brad- 

 gate further east (L. H. P.). 



