166 IOWA ACADEMY OF SCIENCES. 



A. canadense Kalm. Decatur, Shelby, and Johnson Cos. 

 Prairies and open woods, frequent. 



Polygonum giganteum Dietrich. Decatur, Appanoose, and 

 Shelby Cos. Low woods, frequent. 



Asparagus officinalis L. Decatur, Van Buren, Shelby, and 

 Johnson Cos. Waste places, infrequent. 



Smilacina racemosa Desf. Decatur, Appanoose, Des Moines, 

 Shelby, and Johnson Cos. Rich woods, common. 



S. stellata Desf. Des Moines and Johnson Cos. Low places, 

 infrequent. 



Mianthemum canadense Desf. Johnson Co. Upland woods, 

 infrequent. 



Uvularia grandiflora Smith. Decatur, Appanoose, and John- 

 son Cos. Rich woods, frequent. 



Oakesia sessilifolia Wats. Des Moines and Johnson Cos. 

 Woods, infrequent. 



Erythronium albidum Nutt. Page, Decatur, Van Buren, 

 Shelby, and Johnson Cos. Low woods and fields, common. 



Lilium philadelphicum L. Decatur, Shelby, and Johnson Cos. 

 Prairies, infrequent, except Decatur Co. , where the species is 

 common. 



L. canadense L. Decatur and Johnson Cos. 



Trillium recurvatum Beck. Van Buren, Des Moines, Jeffer- 

 son and Johnson Cos. Low woods, frequent locally. 



T. erectum L. Shelby, Crawford, and Johnson Cos. Rich 

 woods, infrequent. 



T. nivale Riddell. Johnson Co. Upland woods, common. 



Melanthium virginicum L. Decatur Co. Wet sloughs, com- 

 mon locally. 



PONTEDERIACE^. 



Pontedera cordata L. Appanoose and Johnson Cos. Borders 

 of ponds, common locally. 



Heteranthera graminea Vahl. Johnson Co. Borders of ponds, 

 common locally. 



COMMELINACE.^. 



Tradescantia virginica L. Page, Decatur, Appanoose, Des 

 Moines, Shelby, and Johnson Cos. Prairies and fields, common. 



JUNCACE^. 



Juncus tenuis Willd. Decatur and Johnson Cos. Prairies 

 and waysides, common. 



J. nodosus megacephalus Torr. Decatur Co. Wet places, fre- 

 quent locally 



