SEDGE FAMIIA. 

 147. Carex chordorhiza L. f. Creeping Sedge. (Fig. 817.) 



Carex chordorhiza L. f. Suppl. 414. 1781. 



Rootstocks slender, creeping, culms slender, erect 

 or nearly so, S'-iS' tall. Leaves i"-i#" wide, 

 shorter than the culm, somewhat involute in drying, 

 straight, the lower ones of the culm reduced to short 

 sheaths; spikes 2-4, aggregated into a terminal ovoid 

 or oblong head4 // -6 // long; staminate flowers termi- 

 nal; perigynia ellipsoid, slightly more than i" long 

 and nearly i" wide, flat on the inner side, convex on 

 the outer, strongly many-nerved, abruptly tipped by 

 a short entire beak; scales ovate or ovate-lanceolate, 

 acute or acuminate, equalling the perigynia or a little 

 longer; stigmas 2. 



In bogs and shallow water, Anticosti to Hudson Bay 

 and the Northwest Territory, south to Maine, New York 

 northern Pennsylvania, Illinois and Iowa. Also in Kti 

 rope. Summer. 



148. Carex incurva Lightf. Curved Sedge. 



ill 



Carex imun-a I,ightf. F1. Scut 





Densely tufted, culms rather stiff, smooth, often 

 curved, i'-6' long. Leaves lea* than i" wide. 

 shorter than or equalling the culm, usually curved; 

 spikes 2-5, sessile and aggregated into an ovoid or 

 globose dense head 5"-S" in diameter, appearing 

 like a solitary spike; staminate flowers few. borne 

 at the tops of the spikes; perigynia orate, slightly 

 swollen, compressed, ii" long. '" *Hd, con- 

 tracted at the bane and narrowed above into a short 

 conic entire beak, faintly several many-nerved, 

 scales ovate, brown or brownish, acute or iiltmcBnl, 

 membranous, shorter than the periKynta; stigma* x. 



Greenland and Hudson Bay to BritUh Columbia. 

 south in the Rocky Mountain* to Colorado. Abo in 



Europe and Asia. Sutmm-i 



149. Carex stenophylla Wahl. Invo- 

 lute-leaved Sedge. (Fig. 819.) 



Carex stenophylla Wahl. Kongl. Vet. Acad. Handl. 

 (II.) 24: 142. 1803. 



Densely tufted and strongly stoloniferous, pale 

 green, culms smooth, stiff, erect, 3'-8' high. 

 Leaves involute, about y t /f wide, shorter than or 

 equalling the culm; inflorescence much as in the 

 preceding species; perigynia ovate or ovate- oval, 

 about \" long, faintly several-nerved, flat on the 

 inner face, low-convex on the outer, gradually 

 narrowed into a short entire beak; scales ovate, 

 brownish, membranous, acute or acuminate, about 

 equalling the perigynia; stigmas 2. 



In dry soil, Manitoba to British Columbia, south to 

 Io\ya, Nebraska and Colorado. Also in Europe and 

 Asia. June-Aug. 



