38 THE BIOLOGY OF HARDING COUNTY 



*74 Car ex Hookeriana Dewey? 



Rare, floodplains of Boxelder Creek. 



75 Care.i- lanuginosa Michx. 



Abundant along some of the forest reserve brooks. 



76 Care.i' longirostris Torr. 



Rare, in the West Short Pines. 

 *77 Carex inonile Tuckm. 



Tolerably common along brooks in Slim Buttes. 



78 Care.i' Sartzcellii Dew. 



Frequent in moist soil along Little Missouri River and on 

 spring soil in the Short Pines. 



79 Care.i' sic cat a Drew. 



Common in tall grass of bluestem swales. 

 *8o Carex vesicaria L. 



Very frequent on the margins of the permanent streams of 

 the higher buttes, and along the rivers. 



8 1 Cy perns inflexus Muhl. 



Locally abundant in blowouts between Zeona and Govert. 



82 Eleocharis aciculwis (L) R. & S. 



Common on moist ground bordering rather permanent bodies 

 of water. 



83 Eleocharis palnstris (L.) R. & S. 



Tolerably common on springy soil along the Little Missouri 

 River. 



84 Scirpus americamis Pers. 



Along streams and ponds. Probably the most abundant rush 

 of the area. 



85 Scrirpus atrovirens Muhl. 



Fairly common along streams of foothills and steppe. 



86 Scirpus lacnstns L. 



Common on marshy ground. 



87 Scirpus campestris Brit? 



Tolerably common about water. 



13. LEMNACEAE (Duckweed Family) 



88 Lemna minor L. Duckweed. 



Covering small stagnant ponds in the East and West Short 

 Pine Hills. 



