SEDGE FAMIL\. 341 
147. Carex chordorhiza LL. f. Creeping Sedge. (Fig. 817.) 
Carex chordorhiza I,. £. Suppl. 414. 1781. 
Rootstocks slender, creeping, culms slender, erect 
or nearly so, 8/-18/ tall. Leaves 1//-114’’ 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 head 4’’-6’’ long; staminate flowers termi- 
nal; perigynia ellipsoid, slightly more than 1// long 
and nearly 1’’ 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 Eu- 
rope. Summer. 
Sis jin Ji 1. 5) 
148. Carex inctrva Lightf. Curved Sedge. (Fig. 818.) 
/} y 
Carex incurva Lightf. Fl. Scot. 544. pl. 24. f. r.  1777- 
Densely tufted, culms rather stiff, smooth, often 
curved, 1/-6’ long. Leaves less than 1/’ wide, 
shorter than or equalling the culm, usually curved; 
spikes 2-5, sessile and aggregated into an ovoid or 
globose dense head 5’/-8’’ in diameter, appearing 
like a solitary spike; staminate flowers few, borne 
at the tops of the spikes; perigynia ovate, slightly 
swollen, compressed, 114’’ long, 1/’ wide, con- 
tracted at the base and narrowed above into a short 
conic entire beak, faintly several-many-nerved, 
scales ovate, brown or brownish, acute or subacute, 
membranous, shorter than the perigynia; stigmas 2. 
Greenland and Hudson Bay to British Columbia, 
south in the Rocky Mountains to Colorado. Also in 
Europe and Asia. Summer. 
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/-S’ high. 
Leaves involute, about 1%4’’ wide, shorter than or 
equalling the culm; inflorescence much as in the 
preceding species; perigynia ovate or ovate-oval, 
about 1’ 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 
Iowa, Nebraska and Colorado. Also in Europe and 
Asia, June-Aug. 
