150 IOWA ACADEMY OF SCIENCES. 



A. tr'ijida L. Decatur, Appanoose, Wapello, Van Buren, and 

 Johnson Cos. Waste ground, common. 



A. triflda infegrifolia T. & G. Decatur and Johnson Cos. 

 Waste places, frequent. 



A. 2)silostachya DC. Decatur and Johnson Cos. Waste places, 

 frequent. 



Xanthium cano dense Mill. Decatur, Appanoose, Wapello, and 

 Johnson Cos. Fields and waste places, common. 



Eclipta alba Hassk. Johnson Co. Along river banks, infre- 

 quent. 



Heliopsis scabra Dunal. Decatur, Appanoose, Van Buren, 

 Shelby, and Johnson Cos. Prairies, common. 



Echinacea purpurea Moench. Decatur and Appanoose Cos. 

 Woods, infrequent. 



E. arigustifoU.a DC. Decatur, Shelby, and Johnson Cos. 

 Prairies, frequent. 



Rudbeckia triloba L. Decatur, Wapello, Van Buren, and John- 

 son Cos. Open woods, oommon. 



R. hirta L. Decatur, Appanoose, Van Buren, and Johnson 

 Cos. Open woods and prairies, frequent. 



R. laciniata L. Decatur and Johnson Cos. Low woods, com- 

 mon. 



R. subtomentosa Pursh. Decatur Co. Prairies, infrequent. 



Lepachys lyinnata T. & G. Decatur, Appanoose, and Johnson 

 Cos. Prairies, common. 



Helianthus annuus L. Decatur, Appanoose, Van Buren, Des 

 Moines, and Johnson Cos. Waste places, frequent. 



H. rigidus Desf. Decatur and Johnson Cos. Prairies, fre- 

 quent. 



H. occidentalis Rid. Johnson Co. Prairies, frequent. 



H. grosse-serratus Mart. Decatur, Appanoose, and Johnson 

 Cos. Low grounds, common. 



H. hirsntus Raf. Decatur and Van Buren Cos. Prairies, 

 frequent. 



H. strumosus L. Johnson Co. Borders and low woods, fre- 

 quent. 



H. tuberosus L. Decatur, Van Buren, and Henry Cos. Low 

 woods and prairies, frequent. 



Actinomeris squarrosa Nutt. Decatur, Appanoose, and John- 

 son Cos. Low w^oods, frequent. 



Coreopsis pcilmifa ~N\itt. Decatur, Shelby, and Johnson Cos. 

 Prairies, common. 



