554 CYPERACE.E. (SEDGE FAMILY.) 



16. R. miliacea, Gray, Culms tall (3 -4 high), 3-angled; leaves flat 

 (3" - 4" wide) ; corymbs 6 - 8, distant, compound ; the branches aud slender 

 pedicels spreading horizontally; spikes ovate; scales caducous ; mits4-8on 

 the spike, rouud-obovate, biconvex ; tubercle compressed, conical ; bristles 6, 

 slender, as long as the nut aud tubercle. Bogs aud deep miry places, Flor- 

 ida to North Carolina. June -July. The nuts of this and the preceding 

 species remain on the spike after the scales have fallen away. 



17. R. punctata, Ell. Culms (l-2 high) slender, 3-angled ; leaves 

 short, linear-lanceolate; corymbs 3-4, cluster-like, the lateral ones simple, 

 distant, and long-peduucled ; spikes ovate ; nut obovate, compressed, with 

 transverse pitted furrows, rather shorter than the 6 slightly hispid bristles ; 

 tubercle conical, compressed, shorter than the nut. Near Savannah aud 

 St. Mary's, Georgia (Elliott). May -June. 



18. R. Grayii, Kunth. Culm solitary, 3-angled (2 -3 high) ; leaves lin- 

 ear, rigid, shining; corymbs 3-4, distant, capitate ; spikes few, large, ovate; 

 nut round-obovate, tumid, slightly pitted, dull ; tubercle short-conical, dilated 

 at the base ; bristles 6, as long as the nut and tubercle ; stamens 3-6. ( K. dis- 

 taiis, Ell.) l)ry pine barrens, Florida to North Carolina. June July. 



* * Nut smooth and even : bristles Itisjiid upward. 



19. R. megalocarpa, Gray. Culms stout (2-3 high), 3-angled; 

 leaves rigid, linear, shining ; corymbs 4-6, distant, spreading or somewhat 

 contracted; spikes (3" long) ovate, single; nut large ("2" long), orbicular- 

 obovate, biconvex, light brown, turning blackish ; tubercle short-conical from 

 a spreading base ; bristles 6-10, commonly shorter than the nut ; stamens 12. 

 (R. dodecandra, Baldw.) Dry sands along the coast of Florida, and Wil- 

 mington, North Carolina. May- August. 



20. R. Baldwinii, Gray. Culms (2 -3 high) sharply 3-angled, rough; 

 leaves short, glaucous, smooth, very acute ; corymbs 1 - 3, contracted or nearly 

 capitate; spikes ovate, dark chestnut; nut ovate, lenticular, twice as long as 

 the flat conical tubercle ; bristles 12-14, longer than the nut; stamens 6. 

 Wet pine barrens, Georgia and Florida. June -July. 



21. R. ciliata, Vahl. Culms blunt-angled (l-2 high); leaves short, 

 glaucous, linear-lanceolate, obtuse, fringed on the margins ; corvmbs mostly 

 solitary, capitate; spikes light brown, ovate; nut oval, lenticular, minutely 

 roughened ; tubercle flat, conical ; bristles 6, \ the length of the nut ; stamens 

 3. Wet pine barrens, Florida to North Carolina, June -August. Leaves 

 2' -4' long. Lateral corymb (when present) remote. 



22. R. fascicularis, Nutt. Culms obscurely 3-angled, commonly slen- 

 der (2 -3 high) ; leaves pale, narrowly linear ; corymbs 2-3, distant, capitate, 

 or sometimes compound ; bracts conspicuous ; spikes light brown, oblong-ovate, 

 densely clustered ; scales mncronate-awned ; nut oval or orbicular, lenticular, 

 dark brown, usually pale in the middle and on the prominent edges ; tubercle 

 white, broadly or narrowly conical, obtuse, compressed, one third to one half 

 the length of the nut ; bristles 4-6, varying from one half to nearly twice the 

 length of the nut. (R. distans, Nutt., the form with longer bristles.) Low 

 pine barrens, Florida to North Carolina. June - July. 



