243] FLORA OF COLUMBIA AND VICINITY lOI 



65. OYPERUS L. Galingale. 



146. O. flavescens L. 



Marshy grounds; rare. 



Maine to Michigan; Florida to Mexico: Europe and 

 Africv. 



147. O. diandrus Torr. 

 Muddy shores; frequent. 



New Brunswick to Minnesota; South Carolina to Kan- 

 sas. 



148. 0. inflexus Muhl. [(T. aristatiis Rottb.]. 

 Hillside near Rollins' spring. 



Vermont to the Northwest Territory and Oregon; 

 Florida to California and Mexico. 



149. 0. acuminatus Torr. & Hook. 

 Swales and muddy shores; scarce. 



Illinois and Louisiana to Oregon and California. 



150. 0. filiculmis Vahl. 



Along the railroad near Rocheport. 



New Hampshire and Ontario to Minnesota and Ne- 

 braska; Florida to Texas and Mexico. 



151. C. pseudovegetus Steud. \C. calcaratus'^^t'i\. 

 Marsh meadows; rare. 



Delaware to Kansas; Florida to Texas. 



152. 0. Hallii Britton. 

 Rich meadows; rare. 

 Missouri and K.4Nsas to Texas. 



153. O. esculentus L. Yellow nut-grass. 

 Abundant in low grounds and waste places and fields. 

 Cosmopolitan. 



154. 0. erythrorhizos Muhl. 



Low flats of the Missouri at Providence. 

 Massachusetts to Nebraska; Florida to California. 



155. C. speciosus parvus (Boeckl.) Britton. 

 Swales; rare, 



Missouri to New Mexico. 



