144 IOWA ACADEMY OF SCIENCES. 



A. parviflora Ait. Decatur Co. Low grounds, prairies and 

 woods. 



Rosa arkansana Porter. Decatur, Appanoose, Shelby, and 

 Johnson Cos. Prairies and woods, common. 



R. humilis Marsh. Johnson Co. 



R. blanda Ait. Johnson Co. Woods, frequent. 



Pyrus coronaria L. Decatur, Appanoose, Shelby, and John- 

 son Cos. Tnickets, common. 



P. malus L. Decatur and Appanoose Cos. Fields and waste 

 places, not infrequent. 



Graf oegus coccinea Li. Decatur, Appanoose, Van Buren, Shelby, 

 and Johnson Cos. Woods, common. 



G. tomentosa L. Page, Decatur, Appanoose, Shelby, and 

 Johnson Cos. Woods, frequent. 



G. crus-galWL. Decatur, Wapello, and Johnson Cos. Woods, 

 frequent. 



AmelancMer canadensis T. & G. Decatur and Johnson Cos. 

 Bluffs, common. 



SAXIFRAGACE^. 



Saxifraga pennsylvanica L. Johnson Co. Low prairies, com- 

 mon. 



Mitella diphylla L. Johnson Co. Woods, common. 



Heuchera hispida Pursh. Decatur, Appanoose, and Johnson 

 Cos. Prairies, common. 



Ribes cynosbati L. Johnson Co. Woods, common. 



R. gracile Mx. Page, Decatur, Appanoose, Shelby, and 

 Johnson Cos. Low grounds, common. 



S. floridum L'Her. Johnson Co. Woods, infrequent. 



CRASSULACE.^. 



Penthorum sedoides L. Decatur, Appanoose, Van Buren, and 

 Johnson Cos. Wet ground, common. 



Sedum telephium L. Decatur and Johnson Cos. Occasion- 

 ally an escape. 



HALORAGE/E. 



Myriophyllum scabratum Mx. Appanoose Co. In shallow 

 water, common. 



