Carex 



CYPERACEA.E 



251 



o "~55 

 Map 512 



Carex oh'gocarpa Schkghr 



Perigynia broadly ovoid to broadly obovoid, 2.5-4 mm long, 1.5-2.5 mm wide, soon 



ventricose-squarrose, tapering at the apex, minutely beaked. .85. C. granularis. 



Staminate spike long-peduncled; spikes all widely separate; rootstocks long-creeping.. . 



86. C. Crawei. 



84. Carex Haleana Olney. (Carex granularis var. Halea?ia (Olney) 

 Porter and Carex Shriveri Britt.) Map 509. Infrequent in low ground, 

 principally along creeks; occasionally on calcareous sandy shores. More 

 frequent northward, and not known from the unglaciated area. 



Que. to Sask., southw. to Va., Ind., and Kans. 



85. Carex granularis Muhl. Map 510. Common throughout the state in 

 moist openings, low woods and on banks of creeks, especially in clay soils ; 

 frequent in dry open woods. 



Vt. to Minn., southw. to Fla. and Ark. 



86. Carex Crawei Dewey. Map 511. Known in Indiana from Lake 

 County only where it is locally plentiful on moist sandy interdunal flats. 

 Here it is commonly associated with Carex Garberi, C. aurea, C. Meadii, 

 and often with C. viridula. 



Que. to Alberta and Wash., southw. to ne. N. J., s. Ala., Tenn., Kans., 

 and Wyo. 



23. § OLIGOCARPAE 



Bract-sheaths glabrous, the lower 0.6-2 cm long; perigynia 4 mm or less long; leaf 

 blades 2-4.5 mm wide; culms reddish-tinged at the base 87. C. oligocarpa. 



Bract-sheaths strongly hispidulous, the lower 2-6 cm long; perigynia 4.5-5 mm long; 

 leaf blades 3-7 mm wide; culms brownish-tinged at the base. .88. C. Hitchcockiana. 



87. Carex oligocarpa Schkuhr. Map 512. Common in rich woods except 

 in the three northern tiers of counties where it is rare. It is a plant of 

 calcareous soils and its favorite habitats are moist, wooded ravines and 

 beech or beech-maple slopes. Occasionally it occurs on dry slopes and in 

 open woods. 



Vt. and Ont. to Iowa, southw. to Ala., Ky., and Tex. 



