538 CYPERACEJX. (SEDGE FAMILY.) 
++ ++ Spikes remote, linear or cylindrical, rather loosely flowered, on long and mostly ` 
drooping peduncles : bracts long and leaf-like : perigynia smooth, somewhat inflated, 
Jew and faintly nerved. 
31. C. oxylepis, Torr. & Hook. Spikes 4 - 5, linear, all on long bristle- 
like partly included nodding peduncles, distant ; perigynia oblong, acute-angled, 
emarginate at the pointed apex, longer than the lanceolate rough-pointed white 
scale. — Low ground, Florida, and westward. — Culms slender, 13°-2° high, | 
the lower part, like the leaves and sheaths, pubescent. 
39. C. sestivalis, M. A. Curtis. Spikes 3-5, linear or filiform, loosely 
flowered, erect, the lowest on nearly exserted peduncles, the upper almost sessile ; 
perigynia oblong, obtuse-angled, obtuse and entire at the apex, twice as long as 
the ovate obtuse or emarginate scale. — Mountains of North Carolina, and north- 
ward. — Culms 1° - 14° high, smooth. Lowest sheaths pubescent. 
33. C. gracillima, Schw. Spikes 3-5, distant, linear, on slender and 
nodding peduncles ; perigynia oblong, obtuse, entire and oblique at the orifice, 
about twice as long as the oblong obtuse short-awned scale. — Wet meadows, 
North Carolina, and northward. —Culm 19-29 high. Spikes 1! - 11! long, 
thicker than those of the preceding. Sheaths smooth. 
34. C. Davisii, Schw. & Torr. Spikes 3-4, remote, oblong-cylindrical, 
all on slender nearly exserted peduncles, nodding ; perigynia ovate-oblong, in- 
flated, round-angled, emarginate at the pointed apex, longer than the oblong 
awned scale. — Mountains of Georgia, and northward. — Culms 13? - 2? high. 
Leaves and sheaths more or less pubescent. Spikes rather dense-flowered. 
35. C. miliacea, Muhl. Spikes 4, linear, all on exserted nodding peduncles, 
the terminal one often wholly sterile; perigynia yellowish, ovate, compres 
3-angled, nerveless or nearly so, tapering into a spreading slightly emarginate 
point, as long as the oblong mucronate scale. — Mountains of Georgia, and 
northward. — Culms weak, 19-149 high. Sheaths smooth. Lower perigyni 
* * Terminal spikes sterile, the others fertile, or with few sterile flowers at the summit. 
+ Perigynia small (1'! — 3" long), slightly or not at all inflated, obtuse or short-beaked. 
++ Fertile spikes sessile, ovoid or oblong, dense-flowered ; perigynia pubescent, short- 
beaked or pointed. 
36. C. filiformis, L. Sterile spikes 2 or more, slender, Jong-peduncled ; 
fertile spikes 1-3, distant, oblong ; perigynia ovoid, obtuse, 3-angled, densely 
pubescent, obscurely nerved, abruptly contracted into a short emarginate point, 
longer than the oblong mucronate brown scale. — Bogs and swamps, » 
Carolina, and northward. — Culms 2° high, smooth. Leaves filiform, 
