COMPOSITA. (COMPOSITE FAMILY.) 211. 
49-6? high. Lower leaves 4/~6/ long. Scales of the involucre oval. Rays 
about 10. (+) 
18. S. spithameea, M. A. Curtis. Stem low (8/-12'), rigid, soft-hairy ; 
leaves oblong-lanceolate, smooth, sharply serrate, acute; the lowest tapering 
into a petiole ; corymb dense, compound; heads 25 ~ 30-flowered, rays 6-7, 
short; scales of the involucre lanceolate, acute; achenia pubescent.— On the 
summit of Roan and Hanging Rock Mountains, North Carolina, Curtis. Sept. 
— Stems tufted. Leaves 1! — 3! long. a 
* * Racemes l-sided, mostly compound, spreading or recurved (in Nos. 20 and 21 
often erect), commonly disposed in a pyramidal panicle. 
+ Smooth species, growing in marshes: stems virgate : leaves very numerous, more or ` 
less fleshy ; the lowest elongated and tapering into a margined petiole ; the upper 
small and passing into bracts: heads middle-sized : achenia pubescent. 
19. S. flavovirens, n. sp. Smooth throughout; stem stout, simple ; 
leaves oblong, obtuse or mucronate ; the lowest serrate, on winged petioles, the 
upper entire, narrowed at the base; panicle pyramidal; heads 10 - 12-flowered ; 
Tays mostly 3, showy ; scales of the involucre lanceolate, acutish. — Brackish 
marshes, Apalachicola, Florida. Sept. — Whole plant yellowish-green. Stem 
29-6? high. Lowest leaves 5/—10/ long, somewhat fleshy, obscurely ribbed. 
Heads rather large. a eae 
?0. S. virgata, Michx. Smooth; stem slender, rarely branched; leaves 
Somewhat fleshy, entire; the lowest oblong-spatulate, sometimes slightly serrate, 
Yeiny ; the upper very small, lanceolate, appressed ; panicle racemose, erect, or 
Pyramidal, with the lower racemes 1-sided ; heads 12 — 16-flowered ; rays 5-7; 
Scales of the involucre lanceolate, acute. — Pine-barren swamps, Florida to Mis- 
sissippi, and northward. Sept. — Stem 39 - 59 high. ; 
21. S, angustifolia, Ell. Smooth; stem slender, simple, or branched 
above; leaves fleshy, entire, the lowest lanceolate, the upper linear and acute ; 
Panicle racemose or pyramidal, lower racemes spreading and 1-sided ; heads 
rather small, about 10-flowered ; rays 5, narrow; scales of the involucre linear, 
obtuse. — Salt marshes, Florida to North Carolina. Oct. — Stem 2°-4° high, 
32. 8, sempervirens, L. Stem simple, or branched above; lowest leaves 
anceolate-oblong, entire, fleshy, long-petioled ; the upper lanceolate, acute, ses- 
sile or partly clasping ; panicle contracted or pyramidal ; heads rather large ; 
rays 7-10; scales of the involucre linear, acutish. (S. limonifolia, Pers.) — 
Salt marshes, Florida, and northward. Sept. and Oct. — Stem 39-89 high. 
Leaves varying in thickness, the lowest 6/— 19! long. 
