198 IOWA ACADEMY OF SCIENCES. 



DlOSCOREACE^. 



Dioscoreavillosa Li. Union and Ringgold counties. Thickets; 

 frequent. 



LlLIACE^. 



Smila X herbacea 1j. Union county. Thickets; rich soil; fre- 

 quent. 



S. hisplda Muhl. Adams, Ringgold, and Fremont counties. 

 Woods; frequent. 



Allium canadense Kalm. Union county. Fields and woods; 

 frequent. 



Yucca angustifolia Pursh. Fremont county. Loess hills; 

 common. 



Polygonatum giganteum Dietrich. Ringgold, Page, and Pot- 

 tawattamie counties. Woods; frequent. 



Asparagus officinalis. Page, Fremont, and Montgomery 

 counties. Waste places; frequent. 



Smilacina racemosa Desf. Union county. Woods; frequent. 



Erythronium mesochoreum Knerr. Decatur county. High 

 prairies; common; blooming before E. albidum Nutt., and the 

 specimens all flowering ones; the leaves very narrow; found 

 also in Harrison county, Missouri. 



Lilium philadelphicum L. Union and Adams counties. Prai- 

 ries; common. 



L. canadense L. Montgomery county. Prairies; frequent. 



L. tigrinum Ker. Fremont county. An escape into waste 

 places. 



Trillium nivale Riddell. Decatur county. Rocky woods; 

 frequent locally. 



Melantlmim virglnicum, L/. Union and Adams counties. 

 Damp prairies; frequent. 



Zygadenus elegans Pursh. Decatur county. Rich woods; 

 frequent locally. 



PONTEDERIACE.E. 



Pontederiacordata L. Ringgold county. Margins of ponds; 

 frequent. 



COMMELINACE^. 



Tradescantia virginica L. Clarke, Union, and Ringgold 

 counties. Prairies and fields; common. 



JUNCACEiE. 



Juncus tenuis Willd. Union and Pottawattamie counties. 

 Grassy places; common. 



