Contributions from the Herbarium of Columbia 



College, No. 12. 



The Genus Eleocharis 



IN North America 



BY 



N. L. BRITTON. 



[REPRINTED FROM THE JOURNAL OF THE NEW-YORK MICROSCOPICAL 

 SOCIETY, Vol. V, No. 4, OCTOBER, 1889.] 



NEW YORK. 



1889. 



