482 PROCEEDINGS OF THE AMERICAN ACADEMY. 
* Spikelets terminal and solitary (rarely one or two secondary ones below): 
plants usually dioeciou 
+ Culms filiform or setaceous, solitary or few from filiform creeping 
stoloniferous rootstocks. 
24. C. eynocrates, Wormskiold. — Figs. 72 to 77. — Culms 0.€ to 
3 dm. high, mostly exceeding the setaceous leaves: spikelets 0.5 to 2 cm. 
long, some staminate and linear or linear-lanceolate, with oblong mostly 
blunt-pointed scales; others staminate above, with 1 or more pistillate 
flowers below; others oblong, strictly pistillate, with 6 to 12 rather 
plump subterete, but thin-edged strongly nerved conic-beaked perigynia. — 
Wormsk. in Drejer, Rev. 16; Fries, Mant. iii, 134, & Sum. 222; 
Anders. Cyp. Scand. 71, t. 3, fig. 8; Kunze, Car. 123, t. 31, fig. 13 
Carey, in Gray, Man. ed. 2, 509; Boott, Ill. iv. 143, t. 459, 460; 
Bailey, Proc. Am. Acad. xxii. 142, & in Gray, Man. ed. 6, 617; 
Macoun, 1. c. 109; Howe, 1. ¢. 49 (incl. var. monosperma, Peck) ; 
Holm, 1. c. 209. ©. Redowskiana, Bailey, Mem. Torr. Cl. v. 89; 
Britton, 1. c. 340, fig. 815; not C. A. Meyer, according to Meinshausen, 
Acta Hort. Petrop. xviii. 305. C. dioica, Schwein. & Torr. 1. c. 2933 
Dewey, 1. c. Ser. 1, x. 283; Carey, in Gray, Man. 537; not L. 
C. monosperma, Macoun, in Bailey, Carex Cat. 3, nomen nudum. 
C. alaseana, Boeckeler, Engler’s Bot. Jahrb. vii. 277, acc. to Bailey. 
— Swamps and bogs, Lasrapor to AasKA, south mostly in Thuya 
swamps to Restigouche Co., New Brunswick; Aroostook and 
Piscataquis Cos., Maine; Herkimer, Yates and Genessee Cos., NEW 
York; Alleghany Co., PennsyLvantA ; and Alcona and Oscoda Cos., 
Micuiean; in the Rocky Mts. to CoLorapo: also in northern EUROPE 
and Asia. June, July. 
+ + Culms stouter, rigid, forming strongly caespitose stools without stolons. 
= C. EXILIS, Dewey. — Figs. 78 to 83. — Culms wiry, 2 to 7 dm- 
high, usually much exceeding the filiform stiff leaves ; spikelets mostly 
solitary, 1 to 3 cm. long, staminate, or pistillate, or with the flowers 
variously situated: perigynia ovate-lanceolate, with serrulate thin mar- 
gins, strongly convex on the outer, flattish and few-nerved or nerveless 
on the inner face. — Am. Jour. Sci. xiv. 351, t. Q, fig. 53; Carey, |. & 
538 ; Boott, Ill. i. 17, t. 47; Bailey, Proc. Am. Acad. xxii. 142, & in 
Gray, Man. ed. 6, 617; Wescan 3. ce. 111; Britton, I. c., 340, fig. 8165 
Howe, l. c. 38; Hole, 3 ce. 207. OC. erilis, var. squamacea, Dewey; 
lc. fig. 54. C1 exilis, var. androgyna, Dewey, in Wood, Class-book, ed. 
