IOWA ACADEMY OF SCIENCES. 1^1 



S. heferophijUa Pursli. Winneshiek Co. In shallow water, 

 frequent. 



NAIADACE^. 



Potamogeton fluitans Roth. Winneshiek, Allamakee, and 

 Clayton Cos. Common in the Upper Iowa river. 

 P. paucijlortLS Pursh. Winneshiek Co. Frequent. 



CYPERACE^. 



Cyperus esculentus L. Clayton Co. Wet ground, frequent. 



Eleocharis palustris R. Br. Winneshiek Co. Wet ground, 

 frequent. 



Scirpus lacustris L. Winneshiek, Allamakee, Clayton, and 

 Dubuque Cos. Wet ground and in water, common. 



S. jluviaiiUs Gray. Allamakee Co. Very common in the 

 sloughs of the Mississippi river. 



S. atrovi7'ens Muhl. Winneshiek, Allamakee, and Dubuque 

 Cos. Wet ground, frequent. 



Carex intumescens Rudge. Dubuque Co. Wet woods, fre- 

 quent. 



G. squar7'osa L. Clayton and Dubuque Cos. Wet woods, fre- 

 quent. 



G. hystricina Muhl. Winneshiek Co. Wet ground, fre- 

 quent. 



G. pennsylvanica Lam. Winneshiek Co. Dry soil, com- 

 mon. 



G. stipata Muhl. Winneshiek Co. 



G. vulpinoidea Mx. Winneshiek Co. 



G. rosea Schkuhr. Winneshiek Co. 



G. cephalopliora Muhl. Winneshiek Co. 



G. sirammea Willd., var. ap^era Booth. Winneshiek Co. The 

 same as G. tenera Dew. 



GRAMINE^. 



Panicum sanguinale L. Winneshiek Co. 

 P. capillare L. Winneshiek Co. 

 P. dichotomum L. Winneshiek Co. 

 P. dichotomum L., var. villosa Vasey. Winneshiek Co. 

 P. latifolium L. Winneshiek, Allamakee, and Clayton Cos. 

 Woods, frequent. 



