564 CYPERACEJE. (SEDGE FAMILY.) 



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

 ceeding the spike; culms tufted, filiform, \\eak <">'- 12' high), rough above, 

 longer than the very narrow leaves. llogs and swamps, common. 



23. C. Fraseri, Andrews. Spike oblong, many-flowered, the fertile por- 

 tion globose ; perigyuia ovoid, inflated, abruptly short-pointed, longer than 

 the oblong obtuse hyaline scale; leaves very wide (!' or more), obtuse, serru- 

 late and wavy on the margins, convolute below, and sheathing the base of the 

 naked smooth culm. Shady hanks of streams on the mountains of North 

 Carolina. Leaves G'- 12' long, longer than the culm. 



24. C. Jamesii, Schw. ? Spike linear (fi"-l()" long); sterile flowers 

 20-25; peritcvnia I -4, ovoid, smooth, '? -nerved, abruptly contracted into a 

 slender compressed ron^h-edixed beak, lunger than the ovate white green- 

 keided scale; leaves linear, fiat, abruptly pointed, longer than the bristle-like 

 prostrate culms. Shady banks, Florida, and westward. Culms 3' - 6' long, 

 riant whitish. 



25. C. Willdenovii, Schkr. Sterile flowers 4 - 8 ; perigynia 6-9, ob- 

 long, the lower much shorter than the leafy green scale; otherwise like the 

 last. Mountains of North Carolina, and northward. 



* * Dioecious. 



26. C. Boottiana, Hcnth. Culms slender, naked, rough, shorter than 



the linear bright-green radical leaves; .spikes (rarely 2) many flowered, pur- 

 plish, cylindrical, erect ; fertile spike dense-llowered ; perigynium obovate,, ob- 

 tuse or abruptlv short-beaked, ciliate and 2-toothed at the orifice, nerved, 

 pubescent, ciliate-toothed on the angles, shorter and narrower than the oblong- 

 acute or abruptlv pointed purple scale. North Alabama (Peters), and west- 

 ward. Culms 6'- S' long. Spikes 1'- 2' long. 



2. Spikes two or i/ir< (rarely sol/tan/). 



* Culms with a sterili- ami f ////< s/>ik>- from <i terminal leafless sheath, and two 



or tin ire fertile ones in the axils of the radical leaves. 



27. C. Baltzellii, Chapm. Sterile spike rigid, often with a few fertile 

 flowers at the base; fertile spikes 3-6, linear-cylindrical, closely many- 

 flowered, one (rarely two) on an erect peduncle which is included in a leafless 

 sheath at the base of the sterile spike, the others on long recurved or spread- 

 ing radical peduncles, commonly sterile at the summit; perigyuia obovate- 

 ohlong, pubescent, abruptly short-pointed, as long as the obovate obtuse 

 mucronate reddish brown scale. Dry sandy soil, Middle Florida. Leaves 

 all radical, 2" -4" wide, glaucous, very rough above, longer than the culm. 



* * Terminal spike sterile below (often wholly so in Nos. 29 and 41), fertile 



above, the others chief) '//fertile. 



4-Perirjynia inflated, contracted into a long and slender beak. 



28. C. squarrosa, L. Spikes 1-4, oval, thick (i'-f), erect, pedun- 

 cled; perigynia horizontal, obovate, smooth, 3-nerved, abruptly contracted 

 into a long "subulate smooth 2-cleft beak, longer than the lanceolate acute 



sca le. Swamps and meadows, near the mountains, Georgia, and northward. 



Culms 8' - 16' hiffh, shorter than the linear leaves and bracts. 



