GENUS 18. 



SEDGE FAMILY. 



4 2 3 



Carex Emoryi Dewey (C. millegrana Holm), with sharply trigonous culms, very rough involute- 

 margined leaves and strongly nerved perigynia occurs from New Jersey and Maryland to North 

 Dakota and New Mexico. 



188. Carex nebraskensis Dewey. Nebraska Sedge. Fig. 1055. 



C. Jamesii Torn Ann. Lye. N. Y. 3: 398. 1836. Not 



Schw. 1824. 

 Carex nebraskensis Dewey, Am. Journ. Sci. (II.) 18 : 



102. 1854. 



Glabrous, culms rather stout, erect, sharp-angled, 

 smooth, or rough above, i-3 tall, phyllopodic, from 

 stout, long-creeping rootstocks. Leaves pale green, 

 ii"-4" wide, rough-margined, their sheaths more or 

 less nodulose; lower bract foliaceous, shorter than 

 to exceeding culm, the upper much shorter and nar- 

 rower ; staminate spikes commonly 2, stalked ; pis- 

 tillate spikes 2-5, dense, oblong-cylindric, erect, 9"- 

 25" long, 3"~4i" in diameter, sessile or the lower 

 short-stalked ; perigynia ascending, elliptic or some- 

 what obovate, prominently several-ribbed when ma- 

 ture, short-beaked, the beak 2-toothed ; scales ovate 

 or lanceolate, obtusish to strongly acuminate, dark 

 with a green midvein, the upper shorter than the 

 perigynia ; stigmas 2. 



South Dakota and Nebraska to Oregon, California 

 and New Mexico. May-Aug. 



189. Carex subspathacea Wormsk. Hoppner's Sedge. Fig. 1056. 



C. subspathacea Wormsk. Fl. Dan. 9: 4. pi. 1530. 1816. 

 Carex Hoppneri Boott; Hook. Fl. Bor. Am. 2: 219. pi. 



220. 1840. 



Glabrous, culm stiff, phyllopodic, smooth, i'-j' tall, 

 from slender elongated rootstocks. Leaves rigid, 

 smooth, f"-ii" wide, the margins strongly involute; 

 lower bracts _foliaceous, somewhat spathe-like ; stami- 

 nate spike solitary, stalked ; pistillate spikes 1-3, 

 erect, sessile or very short-stalked, 3" -6" long, i*"-2" 

 in diameter, closely 4-iS-flowered ; perigynia oval or 

 ovoid, coriaceous, very short-beaked, pale green, 

 faintly few-nerved, densely puncticulate, about I*" 

 long; scales ovate or ovate-oblong, obtuse or acute, 

 shorter than or equalling the perigynia; stigmas 2. 



Greenland to Hudson Bay. Also in northern Europe 

 and Asia. Intergrades with the next. July-Aug. 



190. Carex salina Wahl. Salt-marsh Sedge. Fig. 1057. 



Carex salina Wahl. Kongl. Vet. Acad. Handl. (II.) 24: 165. 



1803. 

 C. cuspidata Wahl. loc. cit. 164. 1803. Not Host, 1801. 



Glabrous, culm slender but stiff, phyllopodic, smooth, 

 erect, 4'-i8' tall, from slender elongated rootstocks. 

 Leaves very narrowly linear, i"-2i" wide, rarely over- 

 topping the culm, the margins revolute ; lower bract 

 similar, not spathe-like ; staminate spikes I or 2, stalked ; 

 pistillate spikes 2-4, slender-stalked or the upper ses- 

 sile, erect, iS-4O-flowered, 5"-is" long, 2" -3" thick; 

 perigynia ovate-elliptic, coriaceous, pale, faintly few- 

 nerved, densely puncticulate, ascending, ii" long, taper- 

 ing into a very short entire beak; scales ovate, reddish- 

 brown or chestnut, with a green midvein, acute _or 

 cuspidate, somewhat longer than the perigynia ; stig- 

 mas 2. 



In salt marshes, Greenland to Hudson Bay, south to 

 Quebec. Also in arctic Europe. Intergrades with the next. 

 July-Aug. 



