160 IOWA ACADEMY OF SCIENCES. 



NYCTAGINACE^. 



Oxybapjius nyctagineus Sweet. Decatur, Wapello, Van 



Buren, Shelby, and Johnson Cos. Along waterways, frequent. 



0. hirsutus Sweet. Shelby Co. Prairie roadsides, frequent. 



0. angustifolius Sweet. Decatur Co. Prairies, infrequennt. 



ILLECEBRACE^. 



Anychia clichotoma Mx. Johnson Co. Woods, frequent. 

 A. capillacea DC. Decatur and Johnson Cos. Woods, fre- 

 quent. 



AMARANTACE^. 



Amarantus retroflexus L. Decatur, Van Buren, and Johnson 

 Cos. 



A. albus L. Decatur Co. 



A. blitoides Watson. Decatur and Johnson Cos. Waste 

 places, frequent. 



A. chlorostachys Willd. Johnson Co. 



A. paniculotus L. Johnson Co. 



Acnida tuberculata Moq. Decatur and Johnson Cos. Waste 

 places, frequent. 



ChenopocUum album L. Decatur, Van Buren, and Johnson 

 Cos. Waste places, common. 



C. hybridum L. Decatur Co. Fields, infrequent. 



POLYGONACE^. 



Rumex britannica L. Decatur Co. 



R. altissimus Wood. Decatur and Johnson Cos. Rich soil, 

 frequent. 



R. verticillata L. Appanoose and Johnson Cos. Rich soil, 

 frequent. 



R. obtusifolius L. Page and Shelby Cos. Rich soil, frequent. 



R. crispus L. Shelby and Johnson Cos. Waste places, com- 

 mon. 



R. acetosella L. Decatur, Shelby, and Johnson Cos. Waste 

 places, common. 



Polygonum orientale L. Johnson Co. Waste places, infre- 

 quent. 



P. pennsT/lvanicum L. Decatur and Johnson Cos. Wet soil, 

 common. 



