194 FLORA. 



in drying; bracts similar to the upper leaves; staminate spike stalked; pistillate 

 spikes i or 2, erect, obtuse, 12-18 mm. long, about 7 mm. in diameter; perigynia 

 oblong-lanceolate, 3 mm. long, biconvex, smooth, firm, not inflated, dull, few-nerved 

 at the base, green below, dark brown at the summit, tapering into a short minutely 

 2-toothed beak; stigmas 2. Lab., Br. Col. to Alaska. Summer. 



17. Carex utriculata Boott. Bottle Sedge. (I. F. f. 687.) Glabrous; 

 culms erect, 0.4-1 m. tall. Leaves elongated, nodulose, 4-12 mm. wide; bracts 

 overtopping the culm; staminate spikes 2-4, linear, stalked; pistillate spikes 

 3 or 4, nearly erect, cylindric, usually densely many-flowered, 5-15 cm. 

 long, the lower short-stalked, the upper sessile; perigynia ovoid, light green, some- 

 what inflated, few-nerved, 4-5 mm. long, narrowed into a sharp 2-toothed beak; 

 scales lanceolate, the lower awned and slightly longer than the perigynia. Marshes, 

 Anticosti to Br. Col., Del., Ohio, Minn., Nev. and Cal. June-Sept. 



18. Carex monile Tuckerm. Necklace Sedge. (I. F. f. 688.) Glabrous; 

 culm slender, 0.3-1 m. tall. Leaves elongated, rather light green, 3-5 mm. wide, 

 little or not at all nodulose; staminate spikes 1-4, slender-stalked; pistillate spikes 

 1-3, erect-spreading, cylindric, 2-8 cm. long, 5-8 mm. in diameter, rather 

 loose at maturity, the upper sessile, the lower one, when 3, slender-stalked ; peri- 

 gynia yellowish green, ovoid, inflated, about 5 mm. long, rather strongly 8-10- 

 nerved, tapering into a sharp 2-toothed beak; scales lanceolate, acuminate or awned, 

 shorter than the perigynia. In marshes and wet meadows, N. S. to Br. Col., N. J., 

 Mo., Colo, and Cal. June- Aug. 



19. Carex Tuckermani Dewey. Tuckerman's Sedge. (I. F. f. 689.) 

 Glabrous: culm slender, usually roughish above, erect or reclining, 0.5-1 m. long. 

 Leaves and bracts much elongated, 3-5 mm. wide; staminate spikes 2 or 3; pis- 

 tillate spikes cylindric, 2-5 cm. long, about 1. 2 cm. in diameter; the upper sessile 

 or nearly so, the lower stalked; perigynia very much inflated, yellowish green, 

 ovoid, few-nerved, abruptly contracted into a subulate 2-toothed beak; scales lanceo- 

 late, awned, about half as long as the perigynia. In bogs and meadows, N. B. to 

 Ont., Minn., N. J. and Iowa. June- Aug. 



20. Carex bullata Schk. Button Sedge. (I. F. f. 690.) Glabrous; 

 stoloniferous; culms slender, 0.3-0.6 m. high, roughish. Leaves and bracts very 

 narrow and elongated, rarely more than 4 mm. wide, rough -margined; staminate 

 spikes mostly 2, long-stalked; pistillate spikes 1-3, light green, oblong or oblong- 

 cylindric, 2-4 cm. long, 9-12 mm. in diameter; perigynia much inflated, ovoid, 

 5-6 mm. long, tapering into a subulate rough 2-toothed beak, shining, strongly 

 nerved, 2-3 times longer than the scale. In swamps, Me. to N. C. June-Aug. 



21. Carex retrorsa Schwein. Retrorse Sedge. (I. F. f. 691.) Glabrous; 

 culm stout, 0.3-1 m. tall. Leaves elongated, thin, rough-margined, 5-7 mm. wide, 

 the upper commonly exceeding the culm, the bracts similar; staminate spikes 1-3, 

 short-stalked; pistillate spikes 3-6, all close together at the summit and sessile or 

 very nearly so or the lowest distant and stalked, cylindric, 2-5 cm. long; perigynia 

 ovoid, membranous, strongly few-nerved, yellowish green, about 6 mm. long, 

 reflexed at maturity, tapering into a subulate 2-toothed beak; scales lanceolate, 

 acute, one-third to one-half as long as the perigynia. In swamps and wet 

 meadows, Newf. to Manitoba, Idaho, Wash., Mass., Penn., Mich, and Iowa. 

 Aug. -Sept. 



22. Carex Hartii Dewey. Hart Wright's Sedge. (I. F. f. 692.) Gla- 

 brous; culms nearly smooth, 0.3-0.8 m. long. Leaves elongated, rough on the 

 margins and midvein, 4-6 mm. wide; staminate spikes I or 2, the lower sometimes 

 pistillate at the base, stalked; pistillate spikes 2-4, scattered, rather loosely many- 

 flowered, the upper sessile, the lower slender-stalked, 2-5 cm. long, all erect or 

 ascending; perigynia inflated, ovoid-conic, spreading or the lower slightly reflexed, 

 few-nerved, about 6 mm. long, gradually tapering into the long 2-toothed beak, 2-3 

 times as long as the scale. In marshes, Ont. and N. H. to Mich. June-Aug. 



23. Carex lurida Wahl. Sallow SEDGE. (I. F. f. 693.) Glabrous ; culm 

 slender, 0.3-1 m. tall. Leaves elongated, rough, rarely more than 4 mm. wide ; 

 staminate spike short-stalked ; pistillate spikes. 1 4, cylindric, 2-5 cm. long, the 

 upper s<s-iie, the lower peduncled; perigynia inflated, ovoid, tapering into a long 

 subulate beak, ascending or the lower spreading, 8 mm. long, thin, yellowish green. 

 rather conspicuously nerved, longer than the rough-awned scale. In swamps and 



