668 REPORT OF STATE GEOLOGIST. 



C. STERILIS Willd. 



(C echinata microstachys Boeckl.) 

 In the northern counties, growing in moist, usually sandy soils. 

 Locally abundant, An extremely variable species. 

 Flowers from May through July. 

 Lake ; Steuben- (Bradner). 



C. sterilis cephalantha Bailey. 



(C. echinata cephalantha Bailey.) 

 Of the same range as the preceding, from which it is usually not 

 separated. 



Flowers from May through July. 

 Lake. 



C. trisperma Dewey. 



In central and northern counties, growing in swamps and wet 

 woods. Nowhere abundant. 



Flowers from June through August. 

 Putnam (MacDougal). 



C. BROMOIDES Schk. 



In the central and northern counties, growing sparingly in bogs 

 and extremely wet ground. 

 Flowers in June and July. 

 ' Putnam (MacDougal) ; Laporte. 



C. Muskingumensis Schwein. Muskingum Sedge. 



In moist woods and thickets in the northern part of State. 

 Flowering season from June until August. 

 Lake (Hill). 



C. tribuloides Wahl. 



Throughout the State, usually found growing in low meadows 

 along ditches. Not infrequent, but nowhere abundant. 

 Flowers from July through September. 

 Tippecanoe (Cunningham) ; Vigo (Blatchley) ; Jefferson. 



C. scoparia Schk. 



Throughout the State, growing in low, wet soil. Usually abund- 

 ant in the stations in which it occurs. 



Laporte (Barnes) ; Vigo (Blatchley) ; Steuben (Bradner). 



