4i 8 CYPERACEAE. VOL. I. 



173. Carex stylosa C. A. Meyer. Variegated Sedge. Fig. 1040. 



Carex stylosa C. A. Meyer, Mem. Acad. St. Petersb. Div. 

 Sav. i : 222. pi. 12. 1831. 



Culms phyllopodic, slender, erect, 6'-ii tall, rough 

 and leafless above. Leaves J"-ii" wide, usually 

 shorter than the culm; staminate spike solitary, 

 nearly sessile, sometimes partly pistillate^ pistillate 

 spikes 2 or 3, oblong-cylindric, erect, 3i"-o," long, 

 2"-3i" in diameter, the lowest slender-stalked and 

 subtended by a linear-subulate bract ; perigynia ovoid 

 or ellipsoid, not flattened, slightly inflated, brown, 

 minutely granulate, ii"-ii" long, nerveless, except 

 for two ribs, minutely apiculate, the^orifice entire 

 and closed by the protruding style, i" long; scales 

 black with light midvein, obtusish, shorter than the 

 perigynia; stigmas 3. 



Labrador and Greenland to Alaska. Also in Europe 

 and Asia. Summer. 



174. Carex Parryana Dewey. Parry's Sedge. Fig. 1041. 



C. Parryana Dewey, Am. Journ. Sci. 27 : 239. 1835. 



Glabrous, culms phyllopodic, slender, smooth, 

 erect, stiff, s'-2o' tall, leafless above. Leaves i"-2" 

 wide, much shorter than the culm, their margins 

 revolute ; spikes 1-4, dense, erect, contiguous, linear- 

 cylindric, 3"-is" long, li" in diameter, the upper 

 sessile and staminate below or throughout, the lowest 

 short-stalked and subtended by an almost filiform 

 bract; perigynia plano-convex, broadly oboyate, two- 

 edged, pale, li" long, minutely papillose, faintly few- 

 nerved, very minutely beaked, the orifice emarginate ; 

 scales ovate, obtuse to mucronulate, dark brown with 

 lighter margins, nearly concealing perigynia; stig- 

 mas 3. 



Hudson Bay to British Columbia, south to North Da- 

 kota and in the Rocky Mountains to Colorado. Summer. 



175. Carex atratiformis Britton. Black Sedge. Fig. 1042. 



1804. 



Carex ovata Rudge, Trans. Linn. Soc. 7: 96. pi. 9. 



Not Burm. 1768. 

 Carex atrata var. ovata Boott, 111. 114. 1862. 

 Carex atratiformis Britton, Bull. Torr. Club 22: 222. 1895. 



Glabrous, culms phyllopodic, slender, erect, sharp- 

 angled, roughish above, 8'~4 tall, usually leafy only 

 below. Leaves smooth or roughish, i"-2" wide, rarely 

 over 6' long, much shorter than the culm ; spikes 2-6, 

 dense, oblong or oblong-cylindric, 4"-! 2" lone, 2"-^" 

 in diameter, the terminal gynaecandrous and short- 

 peduncled, the others pistillate or gynaecandrous, slen- 

 der-stalked, drooping when mature ; lower bracts $'- 

 ii' long, very narrow, the upper ones subulate; peri- 

 gynia flattened, ovate or nearly orbicular, puncticulate, 

 ascending, about li" long, tipped with a very short, 

 2-toothed beak ; scales black or reddish-brown, oblong 

 or obovate, obtuse or subacute, slightly narrower than 

 the perigynia and about equalling them ; stigmas 3. 



Labrador and Newfoundland to the mountains of north- 

 ern New England, west to Alberta. June-Aug. 



