566 CYPEBACE^E. (SEDGE FAMILY.) 



36. C. sestivalis, M. A. Curtis. Spikes 3-5, linear or filiform, loosely 

 flowered, erect, the lowest on nearly exserted peduncles, the upper almost 

 sessile ; perigyuia oblong, obtuse-angled, obtuse and entire at the apex, twice 

 as long as the ovate obtuse or emargiuate scale. Mountains of North Caro- 

 lina. Culms 1- 1 high, smooth. Lowest sheaths pubescent. 



37. C. gracillima, Schw. Spikes 3-5, distant, linear, on slender and 

 nodding peduncles ; perigynia oblong, obtuse, entire and oblique at the ori- 

 fice, about twice as long as the oblong obtuse short awued scale. Wet 

 meadows, North Carolina, and northward. Culm l-2 high. Spikes 1'- 

 1^' long, thicker than those of the piecediiig. Sheaths smooth. 



38. C. Davisii, Schw. & Torr. Spikes 3-4, remote, oblong-cylindrical, 

 all on slender nearly exserted peduncles, nodding ; perigynia ovate-oblong, 

 inflated, round-angled, emarginate at the pointed apex, longer than the ob- 

 long awned scale. Mountains of Georgia (Muldenberg}. Culms H-2 

 high. Leaves and sheaths more or less pubescent. Spikes rather deuse- 

 flowered. 



39. C. miliacea, Muhl. Spikes 4, linear, all on exserted nodding pe- 

 duncles, the terminal one often wholly sterile ; perigyuia yellowish, ovate, 

 compressed-3-angled, nerveless or nearly so, tapering into a spreading slightly 

 emargiuate point, as long as the oblong mucronate scale. Mountains of 

 Georgia (Torre//). Culms weak, 1-!^ high. Sheaths smooth. Lower 

 perigyuia scattered. 



* * * Terminal spikes sterile, the others fertile, or with Jew sterile Jiowers at the 



summit. 



- Perigynia small (l"-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. 



40. C. filiformis, L. Sterile spikes 2 or more, slender, long-ped uncled ; 

 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 mucrouate brown scale. Bogs and swamps, 

 South Carolina (Tor re u). Culms 2 high, smooth. Leaves filiform, elon- 

 gated. Bracts leafy, many times longer than the spikes. 



41. C. vestita, "Willd. Sterile spikes 1 - 2, thick, short-peduncled ; fer- 

 tile spikes 1 -2, approximate, ovoid or oblong; perigynia oblong-ovate, 3- 

 augled, densely-pubescent, strongly nerved, tapering into a distinct beak, with 

 a white membranaceous 2-cleft orifice, longer than the oblong mucronate 

 brown scale. Sandy swamps in the upper districts, and northward. Culms 

 rigid, acute-angled, 1 - 2 high. Leaves short, linear. Bracts short, the upper 

 one shorter than the spikes. 



42. C. dasycarpa, Muhl. Sterile spike single, short-peduncled ; fertile 

 spikes 2-3, approximate, oblong; perigynia woolly, oblong, 3-angled, striate, 

 scarcely beaked, with the orifice entire, twice the length of the ovate barely 

 pointed pale scale ; nut stalked. Shady woods, Florida to South Carolina. 

 Culms 6' -12' high, rough-angled, Leaves pubescent. 





