238 



Cyperaceae 



Carex 



50 



Map 4 74 

 larex leptalea 

 Var, Harperi (Fern.) Stone 



50 



Map 476 



Carex Jamesii Schwein. 



habitat is almost invariably at the springy bases of high wooded river 

 bluffs and terraces. 



N. J. to Fla., westw. to Ind. and Tex. 



13. § PHYLLOSTACHYAE 



Bodies of perigynia oblong-oval; lowest scale 5-15 mm long; pistillate flowers 3-10; 

 staminate scales 2-2.4 mm long, obtuse or somewhat acute; staminate spike 0.7-0.9 

 mm in diameter 53. C. Willdenowii. 



Bodies of perigynia subglobose; lowest scale 15-45 mm long; pistillate flowers 2-3; 

 staminate scales 1.5-1.8 mm long, truncate, erose, with a dark transverse band 

 near the apex; staminate spike 0.4-0.5 mm in diameter 54. C. Jamesii. 



53. Carex Willdenowii Schkuhr. Map 475. Common in southern Indiana 

 (mostly in the unglaciated area and the "flats") on dry wooded, especially 

 oak, slopes, generally in poor, sandy, acid soils ; rarely in low beech or pin 

 oak woods. 



Vt. to Ont. and Ind., southw. to Ga. and Tex. 



54. Carex Jamesii Schwein. Map 476. Very common throughout In- 

 diana except in the northwestern counties from which we have no records. 

 It is a plant of rich woods, occurring in dry neutral soil, especially on the 

 slopes of deep ravines. It is most frequently associated with either Carex 

 Hitchcoekiana or C. oligocarpa or both. 



Ont. and N. Y. to Iowa, southw. to W. Va., Mo., and Kans. 



14. § MONTANAE 



Fertile culms all alike, elongated (7-40 cm long), bearing both staminate and pistillate 

 spikes, basal spikes absent. 

 Body of perigynium elliptic to oblong-ovoid, much longer than wide; staminate spike 

 slender. 

 Perigynia conspicuous in the spikes, not concealed by the scales, 2.5-3 mm long. 

 Staminate scales obtuse or short-acute, closely appressed, not cucullate at the 

 tip, the midvein usually not extending to the tip; pistillate spikes usually 



not aggregated; culms erect 55. C. artitecta. 



Staminate scales ascending to loosely spreading, the midvein extending to the tip. 

 Beaks of perigynia 1.75-2 mm long; staminate spike peduncled, conspicuous, 



