532 CYPERACEJE. (SEDGE FAMILY.) 
warts, those at the base elongated; lobes of the disk 6, distinct, globose, (S. 
Caroliniana, Willd., the villous form.) 
Var. glabra. Smooth throughout, or the leaves and bracts scabrous at the 
summit; culms erect (19 high), rigid, but slender, like the erect leaves ; clusters 
terminal; spikes many-flowered ; lobes of the disk 3, each 2-lobed. This also 
varies, with longer (29 — 219) diffuse culms, and with 1 ~ 2 distant axillary clus- 
ters on long (5'—10/) drooping peduncles.— Low sandy pine barrens, Florida, 
and northward ; the varieties chiefly southward. May - Aug. 
$2. HYPOPORUM. Disk none: nut concave and often pitted at the sides of 
the triangular base. ; 
* Clusters of spikes terminal, leafy-bracted. 
8. S. Baldwinii, Torr. Culms rough above (2°- 3° high) ; leaves mostly 
2, linear, rigid ; nut large (2/ long) dull white, globose-ovate, obscurely angled, 
longitudinally furrowed, concave at the sides of the abruptly contracted base, 
slightly pointed. — Pine-barren swamps, Florida and Georgia, near the coast. 
June and July. 
9. S. gracilis, Ell. Culms slender (1° high), smooth, like the filiform 
leaves; nut small (1" long), ovate, dull white, furrowed lengthwise, the sides at 
the base concave and pitted. — Low pine barrens, Florida to South Carolina. 
June and July. — Plant brownish, tufted. 
* * Clusters of spikes (small) numerous, scattered near the summit of the culm, form- 
ing an interrupted compound spike: bracts mostly short. dm 
10. S. filiformis, Swartz. Glaucous; culms slender (1j? - 2° high), 
smooth; leaves narrowly linear, rough on the margins and keel, ciliate at the 
throat; clusters 3 — 4, erect, few-flowered, the lowest remote, leafy-bracted ; 
scales lanceolate, rough-pointed ; stamens 3; nut obovate, obscurely 3-angled, 
smooth and glassy, concave at the base, not pitted. — South Florida. Oct. 
. M. S. verticillata, Muhl. Culms very slender (6'- 12’ high), smooth, 
like the narrowly linear or filiform leaves and sheaths; clusters 3-5, erect; 
scales smooth; nut very small, globose-3-angled, pointed, rough with 
wavy ridges, not pitted at the base. — Varies with hairy sheaths, more numer- 
ous (6 — 9) clusters, and reticulated nuts, — Damp soil, Florida, and northward. 
June and July. 
12. S. Michauxii. Culms (6'- 12' high) smooth; leaves linear, and, like 
the sheaths, hairy; clusters 4—6, nodding; scales bristle-awned; nut globose- 
3-angled, very minute, pointed, smooth, not pitted at the base. (S. interrupt 
Miche., not of Rickard.) — Low pine barrens, Florida to South Carolina. July 
21. CAREX, L. SEDGE. 
jnous), or in separate spikes. Scales i 
-8. Style 2-3-cleft, exserted from a 
