536 CYPERACE.E. (SEDGE FAMILY.) 



* * Scales owned, green: fertile spikes on nodding peduncles: bracts long and leaf. 

 hk< : /cares broadly linear, 



IS. C. crinita, Lam. Sterile spikes mostly 2, often with fertile flowers 

 intermixed ; fertile spikes 3-4, long-cylindrical, dense-flowered, on long drooping 

 peduncles; perigynia round-ovate or obovate, somewhat inflated, 2 nerved, ab- 

 ruptly short-pointed, shorter than the long and rough-awned Bcale ; culms rough- 

 angled above (2° -3° high). — Swamps in the upper districts, and northward. — 

 Spikes U'-3' loug. 



19. C. Mitchelliana, M. A. Curtis. " Spikes in threes, pednncled, some- 

 what distant, oblong, slightly nodding; terminal spike staminate at the base and 

 summit; the lowest peduncle scarcely sheathed; perigynia ovate, acute, gla- 

 brous ; scales oblong, the lowest with a long cusp much exceeding the fruit, the 

 upper about equalling it. — Wet places, Chatham County, North Carolina." 

 Curtis. — Culm slender, 18' high, rough above. Spikes 1' long. 



§ 2. CAREX Proi-er. Stigmas 3 .• nut 3-angled. 



A. Spike solitary. 



* Dioecious. 



20. C. Boottiana, Benth. Culms slender, naked, rough, shorter than the 

 linear bright-green radical leaves; spikes (rarely 2) many-flowered, purplish, 

 cylindrical, erect ; fertile spike dense-flowered ; perigynium obovate, obtuse or 

 abruptly short-beaked, ciliatc and 2-t00thed at the orifice, nerved, pubescent, cili- 

 atc-toothed on the angles, shorter and narrower than the oblong-acute or abruptly 

 pointed purple scale. — North Alabama, Peters, and westward. — Culms 6'- 8' 

 long. Spikes l'-2' long. 



* * Monoecious. Spike sterile above, fertile below. 



21. Cpolytrichoid.es, Muhl. Spike linear, few-flowered ; perigynia 

 lanceolate-oblong, many-nerved, obtuse and entire at the apex, twice as long as 

 the oblong mucronate scale; bract scale-like or occasionally leafy and exceeding 

 the spike; culms tufted, filiform, weak (6' -12' high), rough above, longer than 

 the very narrow leaves. — Bogs and swamps, Florida, and northward. 



22. C. Fraseri, Sims. Spike oblong, many-flowered, the fertile portion 

 globose ; perigynia ovoid, inflated, abruptly short-pointed, longer than the oblong 

 obtuse hyaline scale; leaves very wide (1' or more), obtuse, Mandate and wavy 

 on the margins, convolute below, and sheathing the base of the naked smooth 

 culm. — Shady banks of streams on the mountains of North Carolina. — Leaves 

 6'- 12' long, longer than the culm. 



23. C. Steudelii, Knnth. Spike linear (6«-10« long); sterile flowers 

 20-25; perigynia 1-4, ovoid, smooth, :i-nerved, abruptly contracted into a 



Blender compressed rough-edged beak, longer than the ovate white green-keeled 

 scale; leaves linear, flat, abruptly pointed, longer than the bristle-like prostrate 



culms. — Shady banks, Florida, and westward. — Culms 3'-(V long. l'laut 

 whitish. 



24. C. WilldenOVii, 8cbk. Sterile flowers I - 8. forming B minute linear 



spike; perigynia 6-9, oblong, with S rough angles; lower scales longer than 



