CYPERACEAE (SEDGE FAMILY) 



223 



v ormantha 



on the inner face, .3-4 mm. long, | or \ exceeding the ovate pointed 

 brownish scale. ( C. echinata, var. microstachys Boeckl. ; C. sterilis 

 Am. auth., not Willd.) Open low ground, Lab. to Alaska, s. to 

 Md., 0., Mich., etc. June-Aug. (Eurasia.) FIG. 375. 

 Var. ormantha Fernald. Inflorescence 2-6 cm. 

 long, of 2-4 very remote 3-9-flowered spikes, the ter- 

 minal one with a clavate base 0.5-1 cm. long ; peri- 

 gynia as in the typical form, mostly twice as long 

 as the scales. Less common. FIG. 376. 



Var. excSlsior (Bailey) Fernald. Tall and slen- 

 der, 0.3-1 m. high ; inflorescence 3-5.5 cm. long, 

 spikes 3-9, distinct, only the lowermost remote, 

 12-20-flowered, at first ellipsoid, with the perigynia 

 ascending, later subglobose, with strongly reflexed 375 

 perigynia ^ longer than the scales. Nfd. to Mich. 

 and N. C. FIG. 377. 



Var. cephalantha (Bailey) Fernald. The coarsest form, 

 3-7 dm. high ; inflorescence cylindric or slightly moniliform, 

 3-7.5 cm. long, the 4-8 short-cylindric spikes 15-4Q-flowered ; 

 perigynia ovate. (C. echinata, var. Bailey.) Nfd. to Mich., 

 B. C., and N. C. FIG. 378. 



Var. angustata Carey. Extremely slender or almost seta- 

 ceous, 1-2 dm. high (in shade often higher) ; leaves 0.5-1.5 mm. 

 wide; inflorescence 0.7 5-2.5 cm. long, the few 3-15- 

 A flowered spikes approximate; the divaricate peri- 

 A gynia lanceolate or lance-ovate, 2.5-3 mm. long, 

 O twice exceeding the scales. ( G. echinata, var. Bailey ; 

 C. sterilis, var. Bailey.) N. S. to Ct., w. Que., 

 111., and Wise. FIG. 379. 



28. C. st6rilis Willd. Coarse, I m. or less tall ; 

 leaves flat, shorter than or equaling the culms ; in- 

 florescence 0/3-6 subglobose or thick-cylindric densely 

 flowered olive-green crowded or distinct spikes ; the thick strongly 

 many-nerved perigynia broad-ovate, 3-3.5 mm. long, 2-3 mm. 

 broad, squarrose or with recurved tips. (C. echi- 

 nata, var. conferta and C. atlantica Bailey.) 

 Coastal bogs and pine-barrens, Nfd. to Fla. , rarely 

 inland to n. Me., Adirondack Mts., N. Y., and 

 Mt. Sorrow, Pa. June, July. FIG. 380. 



29. C. scirpoides Schkuhr. Slender, 1.5-5 dm. 

 high; the leaves 1-2.5 mm. wide; the 2-5 spikes 

 all fertile, all sterile, or variously mixed, usually subglobose, 

 4-5 mm. in diameter, the terminal long-clavate at base; peri- 

 gynia flrm, plump, olive-green or -brown, more or less nerved 

 or essentially nerveless, broadly deltoid-ovate, obscurely short- 

 beaked and with slightly thickened margin, 2.3-3.2 mm. long, 

 1.5-2 mm. broad, finally wide-spreading or recurved, 

 much exceeding the oblong or ovate blunt scales. 

 ( C. interior Bailey.) Damp or wet soil, e. Que. 

 to Hudson Bay, B. C., Fla., and Ariz. May-Aug. 

 FIG. 381. 



Var. capillacea (Bailey) Fernald. Stiff, culms 

 almost bristle-like; leaves about 0.5 mm. broad, 

 often involute ; perigynia strongly nerved. (C. in- 

 terior, var. Bailey. ) N. H. to N. Y. , N. J. , and Pa. 881 . c . scirpoides. 



Var. Josselynii Fernald. Perigynia lance-subu- 

 late, barely 1 mm. broad, mostly ascending. By St. John R., Me. 

 30. C. se6rsa E. C. Howe. Culms soft, in loose stools, 3.5-6.5 

 dm. high ; leaves shorter, soft, pale, 2-4 mm. broad ; inflorescence 

 C. seorsa. 2.5-7 cm. long, of 2-6 mostly remote subglobose or ellipsoid 6-20- 



379. C. stall., 

 v. angustata. 



378. C. stell., 

 T. cephalantha. 



380. C. sterilis. 



