I20 



Cyperace^. — The Sedge Family. 



C'yperiis iiiflexii8, Muhl. Awned Cyperus. 

 Cyperus Aristatus^ of Manuals. 



In damp sandy soil from the Missouri river eastward. 



Cyperus Schwoiiiitzii, Torr. Schweiuitz Cyperus. 



In low, moist ground from the Missouri valley eastward. 



Cyiieru.s acuiiiiuatus, Torr. & Hook. Short-pointed 

 Cyperus. 



In wet meadows throughout the state. 



Cyperus erythrorliizos, Muhl. Red-rooted Cyperus. 

 In the Sioux and James valleys. 



Cyperus strig'osus, L. Straw-colored Cyperus. 



In wet meadows in the little Minnesota valley. 



Cyperus ovularis, (^Michx.) Torr. Globose Cyperus. 

 In the Sioux and Little Minnesota valleys. 



Eleocliaris Euj»"leuiauiii. Steud. Englemann's Spike- 

 rush. 



In wet soil from the Missouri valley eastward. There 

 are several specimens in the College herbarium labelled 

 E. Ovata. The plants all have the pointed spike, the 

 low broad tubercle covering the top of the achcHe and 

 the short bristles of E. Englemanni. 



Eleoeharis palustris, (L.) R. & S. Creeping Spike- 

 rush. 



In swamps and ponds in the Black Hills, James, Sioux 

 and Little Minnesota valleys; and in the southern part 

 of the Missouri valley. 



Eleocharis acicularis, (L.) R. & S. Needle Spike-rush. 

 In wet soils from the Missouri valley eastward and 

 probably throughout the state. 



Eleocharis acumiuata, (Muhl.) Nees. Flat-stemmed 

 Spike-rush. 



In the Black Hills near Hot Springs. 



