349] FLORA OF COLUMBIA AND VICINITY I07 



194. O. Pennsylvanica Lam. 



The commonest sedge, forming the usual sward in forests. 

 New Brunswick to the Northwest Territory; North 

 Carolina to Kans.\s. 



195. 0. setifolia (Dewey) Britton [C. ebumca Boott]. 



About the Pinnacles, where it is common and characteristic. 



New Brunswick to the Northwest Territory; Pennsyl- 

 vania to Missouri and Nebraska. 



196. O. Albursina Sheldon \C. laxiflora latifolia Boott]. 

 Rich wooded hillsides; rare and local. 



Quebec to Minnesota; Virginia to Missouri. 



197. 0. laxiflora Lam. 



Grassy meadows and woods; very common and variable. 

 Maine to Minnesota; Florida to the Indian Territory. 



197a. O. laxiflora varians Bailey. 

 Copses and half-wild fields; common. 

 Range of the type. 



19S. O. blanda Dewey \C. laxiflora stnatula Carey]. 

 Common in all grassy places. 

 Maine to Minnesota; Florida to the Indian Territory. 



199. O. Hitchcockiana Dewey. 

 Rich oak forests; occasional. 



Vermont to Michigan and Ontario; New Jersey to Mis- 

 souri. 



200. O. oligocarpa Schkuhr. 



Dry oak forests and thickets; very common. 

 Vermont to Michigan and Ontario; North Carolina to 

 the Indian Territory. 



201. O. conoidea Schkuhr. 

 Wild meadows; scarce. 



Nova Scotia to Ontario; New Jersey to North Carolina 

 and Missouri. 



202. O. granulans Muhl. 

 Moist open places; common. 



New Brunswick to Manitoba; Florida to Louisiana. 



