256 



CYPERACEAE (SEI)GE FAMILY) 



2-10 cm. long, 6-12 mm. thick; perigynin ascending or slightly spreading, 

 Jiask-shaped, S-ii mm, long, the nhnipt rylindric beak somewhat exceeding 



the bluntish or acute oblong or lanceolate purple-tinged 

 scale. (C. fttriruhtta, var. ininor Boott.) — Wet swamps 

 and shallow water, Nfd. and Lab. to Sask. and B. C, 

 s. to Ct., N, Y., 111., Utah, and 

 Cal. ; conunon northw., local 

 south w. (Ku.) Y\(i. 556. 



Var. utriculata (Boott) Bailey. 

 Coarser; mature spikes 1-2 cm. 

 thick, often longer than in the 

 species ; perigynia ellipsoid-ovoid 

 to conic-cyiitidric, 

 0.5-1 cm. long, taper- 

 ing gradually to the 

 beak. (C. utricu- 

 lata Boott.) — Ex- 

 tending s. to N. J., 

 O., etc. Fig. 557. 



Var. ambigens 

 Fernald. Very slen- 



556. C. rostrata. ^^''^ ^^ ^™- ^^^^ 



in diameter 

 mm. broad ; 

 tin ate 1-3, 



558. C. bullata. 557. C. rost, v. utric. 



culms barely 1 mm. 

 below the spikes ; leaves 2-5 

 staminate spikes 1 or 2 ; pis- 

 1-2.5 cm. long; perigynia as 

 in the species. — Que., N. B., and n. Me. 



184. C. bullata Schkuhr. Slender, 4-9 dm. high, the long stiff leaves 4-6 

 im. wide ; staminate spikes mostly 2 or .3, long-peduncled ; pistillate spikes 



mostly 2, remote, cylindric, densely flowered, 2.5-5 

 cm. long, 1-1.5 cm. thick; perigynia strongly nerved, 

 Jirm, dull or slightly shining, very turgid, 5-8 mm. 

 long, spreading-ascending, the usually serrulate or 

 slightly roughish conic-cylindric beak much exceeding 

 the acute or bluntish scale. ( C. Olneyi Boott ; C. 

 bullata X utriculata Bailey.) — Swales and wet mead- 

 ows, local, Mass. to Del. June, July. Fig. 558. 



Var. Greenii (Boeckl.) Fer- 

 nald. More slender and low^er ; 

 leaves 2-4 mm. wide ; pistillate 

 spike 1 {or if 2, remote), shorter 

 and thicker, rather loosely flow- 

 ered ; perigynia lustrous, 6-9 

 mm. long. (C bullata Man. ed. 

 6.) — Commoner, s. Me. to Pa. 

 and Ga. Fig. 550. 



185. C. Tuckermani Dewey. 

 Culms slender, 1 m. or le.ss high, 

 forming loose stools ; leaves 3-5 

 mm. wide ; bracts very leaf-like 

 and usually much prolonged ; 

 staminate spikes 2 or 3, long-peduncled ; pistillate spikes 

 2 or 3, slender-peduncled or the upper sessile, thick- 

 cylindric, 2-6 cm. long, 1.2-1.8 cm. thick, loosely flowered ; 

 perigynia glos.sy, extremely membranaceous and bladder- 

 like, strongly nerved, globose-ovoid, 1 cm. long, 5-6.5 mm. 

 thick, tapering gradually to the slender cylindric beak, much exceeding the 

 oblong-ovate acute or acuminate scales. — Rich alluvial shores, rarely in swamps, 

 N. B. to Lake St. John, Que., and Ont., s. to N. J., Ind., and Minn. June- 

 Aug. Fig. 560 



559. C. bullata, v. Greenii. 



560. C. Tuckermani. 



