252 



Cyperaceae 



Carex 



50 



Map 514 



Carex conoidea Schkuhr 



15 



Map 515 



Carex amphiloba Steud. 



88. Carex Hitchcockiana Dewey. Map 513. In calcareous or neutral 

 soils; common in rich woods and moist ravines and on river banks; rarely 

 in dry, sandy woods. It is often associated with Carex Jamesii, C. oligo- 

 carpa, C. blanda, and C. gracillima. 



Vt. and Ont. to Wis., southw. to W. Va., Ky., and Mo. 



24. § GRISEAE 



Perigynia elliptic, 1.5 mm wide; bract-sheaths minutely serrulate on the edges; 



peduncles of pistillate spikes rough; leaf blades 2-4 mm wide 89. C. conoidea. 



Perigynia oblong-oval to broadly obovoid, 2- (occasionally 1.5 in C. amphibola) 2.5 mm 

 wide; bract-sheaths glabrous; peduncles of pistillate spikes glabrous or nearly so; 

 leaf blades 2-18 mm wide. 

 Pistillate spikes 3-12 flowered; leaves slightly if at all glaucous, thin and soft; 

 bract-sheaths tight. 

 Pistillate spikes widely separated, the lower nearly basal; culms strongly reddish- 

 tinged at the base; perigynia scarcely turgid; leaf blades 2-4 mm wide, erect; 



achenes slenderly stipitate 90. C. amphibola. 



Lower pistillate spikes not nearly basal; culms brownish-tinged at the base; 

 perigynia more or less turgid; leaf blades (2) 4-7 mm wide, ascending; 



achenes substipitate 91. C. grisea. 



Pistillate spikes (12) 15-35-flowered; leaves very glaucous, thick and firm; bract- 

 sheaths enlarged upward 92. C. glaucodea. 



89. Carex conoidea Schkuhr. Map 514. Infrequent in the northwestern 

 counties in wet sandy fields and on banks of ditches. It is always a very 

 local species and this may account for the lack of specimens or reports from 

 northeastern Indiana where it should be found. The reports from Putnam 

 County by Coulter, from Clark County by Baird & Taylor, and from the 

 Low.)- Wabash Valley by Schneck are unsupported by specimens. 



Newf. to Minn., southw. to Del., Ohio, and Iowa; also in the mts. 

 of N. C. 



90. Carex amphibola Steud. (Carex grisea var. angusti folia Boott.) 

 Map 515. Frequent in southern Indiana especially in the unglaciated area, 



