173." Carex Stylosa C. A. Meyer. Variegated Sedge

Fig. 1040

Carex stylosa C. A. Meyer, Mem. Acad. St. Petersb. Div. Sav. 1: 222. pi. 12. 1831.

Culms phyllopodic, slender, erect, 6'-1 1/2° tall, rough and leafless above. Leaves 3/4"-1 1/2" wide, usually shorter than the culm; staminate spike solitary, nearly sessile, sometimes partly pistillate; pistillate spikes 2 or 3, oblong-cylindric, erect, 3 1/2"-9" long, 2"-31/2" in diameter, the lowest slender-stalked and subtended by a linear-subulate bract; perigynia ovoid or ellipsoid, not flattened, slightly inflated, brown, minutely granulate, 1 1/4"-1 3/4" long, nerveless, except for two ribs, minutely apiculate, the orifice entire and closed by the protruding style, \" 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, 5'-2o' tall, leafless above. Leaves 1"-2" wide, much shorter than the culm, their margins revolute; spikes 1-4, dense, erect, contiguous, linear-cylindric, 3"-15" long, 1 1/2" 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 obovate, two-edged, pale, 11/4" 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; stigmas 3.

Hudson Bay to British Columbia, south to North Dakota and in the Rocky Mountains to Colorado. Summer.

175. Carex Atratiformis Britton. Black Sedge

Fig. 1042

Carex ovata Rudge, Trans. Linn. Soc. 7: 96. pl. 9. 1804.

Not Burm. 1768. Carex atrata van 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, 1"-2" wide, rarely over 6' long, much shorter than the culm; spikes 2-6, dense, oblong or oblong-cylindric, 4"-12" long, 2."-3" in diameter, the terminal gynaecandrous and short-peduncled, the others pistillate or gynaecandrous, slender-stalked, drooping when mature; -lower bracts 1/2-i¥ long, very narrow, the upper ones subulate; perigynia flattened, ovate or nearly orbicular, puncticulate, ascending, about 1 1/4" 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 northern New England, west to Alberta. June-Aug.