CYPERACEAE. 201 



shorter than or equalling the perigynia and much narrower, stigmas 2. In swamps 

 and along streams, Newf. to Alaska, Mass., Penn., Ohio, Minn, and Br. Col. Also 

 in Europe. Hybridizes with C. stricta. June-Aug. 



53. Carex lenticularis Michx. Lenticular Sedge. (I. F. f. 723.) Gla- 

 brous, pale green; culms slender, sharp -angled, roughish above, 0.3-0.6 m. tall. 

 Leaves elongated, rarely over 2 mm. wide, slightly rough-margined, their sheaths 

 not fibrillose; lower bracts similar, usually much overtopping the spikes; staminate 

 spike solitary or rarely 2, sessile or short-stalked, often pistillate above; pistillate 

 spikes 2-5, clustered or the lower distant, sessile or the lower short-stalked, erect, 

 linear-cylindric, 8-25 mm. long, 3-4 mm. in diameter; perigynia ovate or elliptic, 

 acute, minutely granulate, faintly few-nerved, tipped with a minute entire beak; 

 scales green, appressed, shorter than the perigynia; stigmas 2. On shores, Lab. 

 to the N. W. Terr., Me., Vt., Ont. and Minn. June-Aug. 



54. Carex Goodendvii J. Gay. Goodenough's Sedge. (I. F. f. 724.) 

 Glabrous; culms stiff, sharp-angled, sometimes rough above, 0.3-0.6 m. tall. 

 Leaves elongated, smooth, glaucous, 2-4 mm. wide, not exceeding the culm, their 

 sheaths' not fibrillose; lower bracts usually foliaceous; staminate spike sessile or 

 stalked;' pistillate spikes 2-4, sessile or nearly so, erect, many-flowered, narrowly 

 cylindric, 4-5 mm. in diameter, 1-2.5 cm - l° n g; perigynia flattened, broadly oval 

 or ovate, faintly few-nerved, green, less than 2 mm. long, minutely beaked, the ori- 

 fice nearly entire; scales purple-brown to black with a green midvein, very obtuse, 

 shorter than the perigynia; stigmas 2. In wet grounds, Newf. to Mass. and Penn. 

 June-Aug. 



55. Carex Bigeldvii Torr. Bigelow's Sedge. *(I. F. f. 725.) Glabrous 

 and smooth throughout or nearly so; culms sharp- angled, 2-5 dm. tall. Leaves 

 3-4 mm. wide, not exceeding the culm, the lower bracts similar, but shorter; 

 sheaths slightly or not fibrillose; staminate spike stalked, sometimes pistillate at 

 the base, pistillate spikes 2-4, linear-cylindric, loosely flowered at the base, dense 

 above, 1-2.5 cm - l° n g> 3~4 mm - thick, the upper sessile, the lower often slender- 

 stalked; perigynia oval, about 2 mm. long, fr.intly nerved, scarcely beaked, the 

 orifice entire; scales purple-brown with a narrow green midvein, often with green 

 margins, obtuse or the lower acute, equalling or a little exceeding the perigynia; 

 stigmas 2, rarely 3. Greenland and Lab. to the mountains of New England and 

 N. Y. Also in Europe. Summer. 



56. Carex subspathacea Worm:k. Hoppner's Sedge. (I. F. f. 726.) 

 Glabrous; culm smooth, 2-13 cm. tall. Leaves rigid, smooth, about 2 mm. wide; 

 lower bracts foliaceous; staminate spike stalked; pistillate spikes 1-3, erect, sessile 

 or very short-stalked, 6-12 mm. long, about 3 mm. in diameter; perigynia oval or 

 ovoid, very short beaked, pale green, faintly few-nerved, about 2 mm. long; scales 

 ovate or ovate-oblong, shorter than or equalling the perigynia; stigmas 2. Green- 

 land to Hudson Bay. Summer. 



57. Carex salina WahL Salt-marsh Sedge. (I. F. f. 727.) Glabrous; 

 culm smooth, 1.5-5 dm. tall. Leaves narrowly linear, 1-2 mm. w r ide, the lower 

 bract similar; staminate spikes I or 2, stalked; pistillate spikes 1-3, slender-stalked 

 or the upper sessile, erect, loosely fe ..-ceveral-flowered, I-2.5 cm. long, 3-4 mm. 

 thick; perigynia ovate-elliptic, ^ale, faintly few-nerved, ascending, 3 mm. long, 

 tapering into a short entire be::k; sales ovate, brown with a green midvein, acute 

 or cuspidate, somewhat longer than the perigynia; stigmas 2. In salt marshes, 

 Greenland to Hudson Bay. Also in arctic Europe. Summer. 



58. Carex cuspidata Wahl. Cuspidate Sedge. (I. F. f. 728.) Glabrous; 

 culms erect. 3-7 dm. tall. Basal Laves often equalling the culm. 3-6 mm. wide, 

 smooth; leaves of the culm similar to the lower bracts, which usually overtop the 

 spikes; staminate spikes 1-3, stalked; pistillate spikes 2-4, cylindric, often staminate 

 at the summit, erect, the lower stalked; perigynia elliptic, green, 2-4-nerved, with a 

 short entire beak; scales lanceolate, pale, acuminate or contracted into a serrate 

 awn, much longer than the perigynia; stigmas 2. In marshes, Newf. and Lab. 

 to Mass. Also in Europe. Summer. 



Culms slender; pistillate spikes 0.6-6.5 cm. long; stigmas 3 (2 in No. 59). 

 Pistillate spikes linear; scales shorter than the perigynia. PRASINAE. 



Perigynia twisted toward the top; scales purple-brown. 59. C. torta. 

 Perigynia straight; scales green. 60. C. prasina. 



