CTPEBACE.E. (SEDGE FAMILY.) 539 



terete ; scales 4-5, the two lower ones ovate and empty, the upper lanceolate, 

 acute ; nut linear-oblong ; culm tall (2° - 4°), downy and rougljish, like the 

 broadly linear leaves. — Barren sandy soil, Florida, and northward. July - 

 Sept. — Leaves much shorter than the culm. 



39. C. retl'Orsus, Chapm. Umbel simple, 8-rayed ; spikes clavate-obo- 

 vate ; spikelets lanceolate, acute, reflexed, 2 - 3-flowered, the lowest Hower fer- 

 tile ; scales oblong, 7-uerved, scarcely longer than the oblong triangular nut ; 

 rachis very slender, broadly winged ; culm smooth (2° high); leaves linear, 

 involucre longer than the umbel. — Koberts's Key, Caximbas Bay, South 

 Florida. 



40. C. Baldwinii, Terr. Umbel 6 - 12-rayed, shorter tlian the involucre ; 

 heads globose or olilong ; spikelets linear, somewhat compressed, acute, 6-12- 

 flowered ; scales (greenish or yellowish) oblong, obtuse, mucronate, closely im- 

 bricated ; uut oblong; culms (l°-2°high) obtuse angled, longer than the 

 linear leaves. (Mariscus echinatus, Ell.) — Cultivated ground, Florida to 

 Xorth Carolina, and westward. July - Sept. — Spikelets 3" - 6" long. 



41. C. Lancastriensis, T. C. Porter. Culms triangular {\°-2° high); 

 leaves rather broadly linear; umljel 6-9-rayed; spikelets subulate, numerous 

 in au oval or globular head, soon reflexed, 3 - 6-flowered ; scales oblong, ob- 

 tuse, twice the length of the linear-oblong uut; rachis broadly winged. — 

 Alabama {Porter), and northward. 



42. C. cylindricus, Chapm. Umbel 3 - 6-rayed, simple, erect ; heads 

 oblong or cylindrical; spikelets very numerous, lanceolate, 7-9-flowered; 

 scales oblong, 7 - 9-nerved, pale, twice the length of the oblong triangular nut ; 

 rachis very slender, narrowly winged ; culms (l°-2° high) triangular, smooth ; 

 leaves broadly linear, as long as the culm. — Sandy keys of Caximbas Bay, 

 South Florida. 



43. C. Blodgettii, Britt(m ? Umbel 3-5-rayed, simple, longer than the 

 3-leaved involucre; heads globose, den.se, 3" -4" in diameter; spikelets 6-8- 

 flowered ; scales oval, obtuse, little longer than the ovate-oldong triangular 

 nut ; rachis strongly winged ; culms 6' - 12' high, much longer than the smooth 

 linear leaves. — Keys of Caximbas Bay, South Florida. 



2. KYLLINGIA, L. 



Spikelets compressed, mostly 1 -flowered. Scales commoidy 4, imbricated 

 in two rows, the two lower ones small and empty, the third perfect, the fourth 

 imperfect. Perianth none. Stamens 1-3. Style elongated, 2-cleft. Nut 

 lenticular. — Culms jointless, 3-angled, leafy at the liase. Involucre .^-5- 

 leaved. Spikelets collected in single or clustered sessile heads. Plants 

 odorous. 



1. K. pumila, Michx. Heads (green) mostly 3, globose or ovate ; spike- 

 lets 1-flowered, ovate-lanceolate, acute at each end ; scales 3, the lowest minute, 

 the micklle one ovate, compressed, mucronate, mostly serrulAte on the keel, 

 enclosing the uj)per one ; nut obovate ; stamens 2 ; culms weak, acute angled ; 

 leaves and 3-4-leaved involucre linear. — Wet places, Florida to North Caro- 

 lina. July - Sept. — Culms tufted, 4' - 1 0' high. 



