540 CYPERACE^E. (SEDGE FAMILY.) 



2. K. Odorata, Vahl. Heads (white) 1-3, ovate or oblong; spikelets 

 ovate-oblong, acute, 1 -flowered, or imperfectly 2-flowered ; scales 4-5, the two 

 lower ones minute, the third and fourth alike, ovate, acute, smooth, the fifth 

 enclosed in the fourth ; stamens 2 ; nut obovate ; culms erect, obtuse-angled ; 

 leaves aud 3-5-leaved involucre broadly linear. Low exposed places and 

 along roads, Middle Florida. August-Sept. 2/ Culms 4'-12' high, 

 riant pale green, pleasant-scented. 



3. K. monocephala, L. " Heads single, globose, compact ; spikelets 

 1-flowered, monandrous, ovate, acuminate, the 2 superior scales striate, uearlv 

 smooth on the sides, serrulate-ciliate on the keel, the two inferior minute ; nut 

 somewhat orbicular ; involucre 3-leaved, one of the leaves erect, the others 

 Horizontal." Ton-. Low moist places near the coast, Georgia and Florida. 

 Uhizoma creeping. Culms 1 high. Head greenish, generally inclined. 

 Leaves abruptly pointed. 



3. DULICHIUM, Richard. 



Spikelets linear, compressed, many-flowered. Scales imbricated in 2. rows, 

 decnrrent on the joints of the rachis. Perianth composed of 6 - 9 downwardly 

 hispid rigid bristles. Stamens 3. Style 2-cleft. Nut lanceolate, compressed, 

 long-beaked. Perennial. Culms terete, jointed, leafy. Leaves numerous, 

 3-ranked, linear or lanceolate, short and spreading. Spikes numerous, soli- 

 tary in the upper axils, simple or the lower compound. Spikelets 8-14, 2- 

 ranked, spreading, 6- 10-flowered. Scales lanceolate, many-nerved, closely 

 imbricated. Bristles nearly twice as long as the compressed or concave 

 nut. 



1. D. spathaceum, Richard. Ponds and ditches, Florida, and north- 

 ward. August-Sept. Culms 1- 2 high. Leaves 1'- 3' long. Spikelets 

 6"- 12" long. Peduncles of the lower spikes longer than the sheaths. 



4. HEMICARPHA, Nees. 



Spikes many-flowered, ovate, one or few in a terminal (apparently lateral) 

 cluster. Scales imbricated in many rows, ovate or obovate. Inner scale 

 single, behind the flower, very thin, minute. Perianth none. Stamens I -2. 

 Style 2-cleft. Small tufted annuals with naked culms, narrow radical leaves, 

 and an erect mostly 1 -leaved involucre. 



1. H. SUbsquarrosa, Nees. Culms nearly terete (2'- 4' high); leaf 

 solitary, shorter than the culm; involucre 1-2-leaved, the lower erect, the 

 other short and reflexed or wanting; spikes 2 (rarely one); scales brown, 

 ovate-oblong, acuminate; stamens 2; style deeply 2 parted, smooth; nut ob- 

 long-obovate, minutely pitted in lines. Low sandy places, Florida, and north- 

 ward. A ugust - Sept. Sheaths brown. Spikes 2" - 3" long. 



5. LIPOCARPHA, R. Br. 



Spikes many-flowered, terete. Scales spatulate, imbricated in many rows, 

 deciduous, the lowest empty. Interior scales 2, parallel to the exterior ones, 

 membraxiaceous, enclosing the flower aud nut. Stamens 1-2. Style 2-3- 



