CYPERACEAE (SEDGE FAMILY) 99 



* Terminal spike all staminate (in No. 33 often with a few pistillate flowers at 

 base or apex, or rarely all pistillate and dioecious), cylindrical: pistillate 

 spikes approximate, erect: stigmas usually 3. STYLOSAE. 



33. Carex Parryana Dewey, Am. Journ. Sci. 27: 239. 1835. Stoloniferous : 

 culms rigid, 1-4 dm. high, stout, obtusely angled, smooth or nearly so, granu- 

 lated, longer than the rigid, long-pointed, narrow leaves: terminal spike 

 usually largest, about 2 cm. long, brown, with 1-5 small, globular, oblong, or 

 cylindrical erect spikes near its base (or sometimes entirely solitary), the lower 

 usually subtended by a narrow bract shorter, than the culm and often more or 

 less remote and shortly peduncled: perigynium obovate or triangular-obovoid, 

 somewhat plano-convex, scabrous above, lightly nerved, especially on the 

 outer side, very abruptly short-beaked, the orifice entire or erose-hyaline, 

 shorter and about the width of the very obtuse, brown, white-nerved, hyaline- 

 margined, sometimes minutely apiculate and ciliate scale. Colorado, and 

 northward in the mountains; rare. 



34. Carex Reynoldsii Dewey, Am. Journ. Sci. II. 32: 39. 1861. Stolon- 

 iferous: culms 3-10 dm. high, sharply angled, longer than the flat, glaucous 

 leaves: staminate spike sessile, about 12 mm. long: pistillate spikes 3-6, short 

 and thick, 8 mm. wide, not commonly more than twice as long as broad (and 

 usually less), sessile or short-peduncled, aggregated, or the lowest 2-5 cm. 

 remote and exserted: lower bract about the length of the culm, bearing con- 

 spicuous purple auricles: perigynium large, obovoid, 3-angled, prominently 

 nerved, green or light-colored, abruptly narrowed into a nearly entire purple 

 beak, somewhat spreading, when mature much longer and broader than the 

 acute black scale. Mountains; Utah to Wyoming. 



* * Terminal spike staminate: pistillate spikes ovoid or oblong and drooping: 



stigmas 3. LIMOSAE Tuckm. 



35. Carex misandra R. Br. Suppl. Parry's Voy. 283. 1823. Glabrous: 

 culms 2-40 cm. tall: leaves 2-3 mm. wide, clustered, seldom over 6 cm. long: 

 bracts narrowly linear, sheathing, not overtopping the spikes: terminal spike 

 slender-stalked: pistillate spikes 1 or 2, filiform-stalked, 6-15 mm. long, about 

 4 mm. thick, rather few-flowered, drooping: perigynia narrowly lanceolate, 

 acuminate, narrowed at the base, 3 mm. long, dark brown, denticulate above: 

 scales obtuse, purple-black with white margins, somewhat shorter than the 

 perigynia : stigmas 2 or 3. Throughout Arctic America, extending south in the 

 Rocky Mountains to the higher summits of Colorado. 



* * * Terminal spike club-shaped, staminate below: lateral spikes occasionally 

 bearing a few staminate flowers at base: scales broad, not conspicuously acute. 

 ATRATAE Kunth. 



36. Carex atrata L. Sp. PI. 976. 1753. Caespitose: culm 1^ dm. high, 

 sharply angled, smooth or roughish, longer than the long-pointed leaves: 

 bracts about equaling the culms, mostly with conspicuous auricles: spikes 2-4, 

 densely flowered, clavate or oblong, thick, 1-4 cm. long, black or dark brown, 

 approximate or often aggregated, all more or less peduncled, at first upright 

 or spreading, at length usually drooping and often exserted, and the top of the 

 culm appearing as if bent over: perigynium broadly ovate or orbicular, nerve- 

 less, bearing a short notched beak, commonly a little broader and about the 

 length or a little shorter than the black or dark brown obtuse or acutish scale. 

 (C. chalciolepis Holm. Am. Journ. Sci. 16: 28. 1903.) High mountains; Colo- 

 rado and Utah and northward. 



37. Carex bella Bailey, Bot, Gaz. 17: 153. 1892. Tall and slender: spikes 

 narrowly cylindrical, 3-4 cm. long and 1 cm. or less wide, the lower one or two 

 on slender peduncles or even radical, the terminal one bearing a very long and 

 much contracted staminate portion: perigynium greenish-white, conspicuously 

 broader and usually longer than the black-purple and faintly white-nerved 

 scale. C. atrata ovata. Wyoming to Arizona. 



38. Carex nova Bailey, Mem. Torr. Club 1: 10. 1889. Resembling the pre- 



