Carex 



Cyperaceae 



221 



50 



Map 423 



Carex convoluta Mack, 



50 



Map 424 



Carex cephalophora Muhl 



o 50 



Map 425 



Carex Leavenworthii Dewey 



Scales acuminate or short cuspidate (rarely merely acute), about the length of 

 the bodies of the perigynia; stigmas long and slender; sheaths concave 

 at the mouth, usually not at all transversely rugulose; culms sulcate and 



white-striate up to the inflorescence, their angles usually smooth 



13. C. aggregata. 



Mature perigynia subcoriaceous, ovate, with border raised ventrally to the base, 

 abruptly contracted into a short, stout beak, culms sulcate and white-striate 

 only below, minutely winged or thin-margined up to the inflorescence, serrulate 

 on the angles; leaf blades 5-10 mm wide; lower sheaths usually transversely 

 rugulose; lower spikes usually separate; stigmas short and stout; scales short, 

 blunt to acute 14. C. s-parganioides. 



4. Carex retroflexa Muhl. Map 421. Very local in northern Indiana; 

 frequent in the unglaciated area of the southwestern counties. A woodland 

 species partial to dry rocky white oak woods, especially in sandstone areas. 



Vt. to Mich., southw. to Fla. and Tex. 



5. Carex rosea Schkuhr. Map 422. Very common in both dry and moist 

 woods. This species and C. convoluta are perhaps the most plentiful wood- 

 land sedges in the state as a whole. 



N. S. to N. Dak., southw. to Ga. and La. 



6. Carex convoluta Mack. (Bull. Torrey Bot. Club 43: 428. 1916.) 

 {Carex rosea of authors.) Map 423. Very common in dry and low woods 

 of all types. Often in somewhat richer soils than C. rosea. 



N. S. to Man., southw. to Ala., Tenn., and Ark. 



7. Carex cephalophora Muhl. Map 424. Very common in oak and 

 beech-maple woods ; occasional along open grassy roadsides and in thickets. 



Maine to Man., southw. to Fla. and Tex. 



8. Carex Leavenworthii Dewey. Map 425. Frequent, except in the 

 lake area, in open grassy, generally dry or sandy, oak woods and bordering 

 thickets; occasionally bordering woods in clay fallow fields. 



Southern N. J., sw. Ont. and Iowa to Fla. and Tex. 



