CYPERACEAE (SEDGE FAMILY) 



253 



171. C. gigantda Rudge. Loosely caespitose or somewhat stolon if erous, stout 

 0.5-1.2 m. high ; leaves 0.7-1.5 cm. broad; staminate spiltes 2-4 ; pisliUate 2-4' 

 scattered, the lowest long-peduncled and remote, rather ' ' 



loosely flowered, 3-7 cm. long, 2-2.7 cm. thick; peri- 

 gynia swollen below but very abruptly contracted into 

 a slender beak 3-4 times as long as the body, spreading 



at right angles or nearly so, never 



becoming yellow ; scales narrow, 



smooth. (C. grandis Bailey.) — 



Swamps, Del., Ky., and Mo., south w. 



July-Sept. Fig. 541. 



172. C. Iupulif6rmis Sartwel.. 



Stout, tall, 0.0-1.2 m. high ; leaves 



0.6-1.3 cm. broad, conspicuously 



elongate bracts broad and far ex- 

 ceeding the culm ; staminate spike 



usually peduncled ; pistillate spikes 



3-5, 3-8 cm. long, cylindrical (2-3.5 km r^ ■ . 



J.1 ' 1 x .. V i ^1 1 ^ 541. C. mgantea. 



cm. thick), at least the lower pe- 



duncled, erect or ascending, somewhat scattered or the 

 upper approximate, becoming yellowish brown ; pericynia 

 542. C. lupuliformis narrowly conic-ovoid, 1.3-2 cm. long, mostly twice exceed- 

 ing the firm lance-attenuate scales, ascending. (C lupu- 

 Una, var. polystachya Schwem. & Torr.) — Eich swamps, 

 meadows, and prairies, Vt. to Minn., s. to Del., 111., and 

 La. July-Oct. Fig, 542. 



173. C. lupulina Muhl. Very stout and leafy, 4-9 dm. 

 high ; leaves 0.0-1 cm. broad, loose ; bracts broad and 

 elongate ; pistillate spikes 2-0, approximate at the top of 

 the culm, all closely sessile or the lower sometimes short- 

 ped uncled, thick-cylindrical to subglobose, very heavy and 

 densely flowered, 3-6 cm. long, 2-^ cm. thick; staminate 

 spike sessile ; perigynia much inflated, rather soft, 1.3-2 

 cm. long, erect or but slightly spreading, giving the spike 

 a hop-like aspect (whence the name); scales firm, lance- 

 ovate, mostly much shorter than the perigynia. — Swamps 



and wet woods N. B., to Ont., la., and southw. July- 

 Oct. Fig. 543. — Frequently hybridizes with other 

 species. 



Var. pedunculata Dewey. Often taller ; spikes more 

 or less scattered, some or all prominently peduncled; 

 staminate spike usually conspicuous, generally pe- 

 duncled; perigynia more spreading. — Locally more 

 abundant. 



174. C. Grayii Carey. Rather stout, 0.3-1 m. high ; 

 leaves 6-11 mm. wide, flat, harsh, pale green; pistillate 

 spikes 1 or 2, the lowest often peduncled, perfectly 

 globular and compactly 6-30-flowered, the perigynia 

 firm., much inflated, glabrous, 1.5-2 cm. long, spread- 

 ing or defiexed and prominently many-nerved. (C. 

 Asa-Grayi Bailey.) — Wet alluvial woods and meadows, 

 w. N. E.'to Ont., la., and Mo., local. June-Oct. Fig. 

 644. 



Var. hispidula Gray. Perigynia hispidulous. — Ct. 

 to Mo., and southw 



543. C. lupulina. 



Grayii. 



175. C. intumescens Rudge. Slender, 0.3-1 m. 



high ; leaves and bracts 3-8 mm. wide, soft, much elongate, dark green ; pistil- 

 late spikes l-o, subglobose or short-ovoid, loosely 1-12-flowered ; the perigynia 

 thin, bladdery, green, 1-1.5 cm. long, 5-8 mm. thick, spreading, many- 

 nerved. — SwamDS, meadows, and alluvial woods, throughout ; the typical 



