COMPOSITE:. (COMPOSITE FAMILY.) 231 



rather small, about 10-flowered ; rays 5, narrow; scales of the involucre linear, 

 obtuse. Coast of Florida to North Carolina. (Jet. Stein -2 - 4 high. 



22. S. sempervirens, L. Stem simple, or branched above ; lowest leaves 

 lanceolate-oblong, entire, fleshy, loug-petioled ; the upper lanceolate, acute, 

 sessile or partly clasping; panicle contracted or pyramidal; heads rather 

 large; rays 7-10; scales of the involucre linear, acutish. Salt marshes, 

 Florida, and northward. Sept. -Oct. Stem 3 ; - 8 high. Leaves varying 

 in thickness, the lowest 6' - 12' long. 



2 *- Stems (smooth) commonly branching : leaves not JJeshy, serrate, veiny ; the 

 lowest ample, tapering into a margined petiole : panicles pyramidal, or race- 

 mose on the spreading branches. 



23. S. patula, Mulil. Stem stout, strongly angled ; leaves large, ovate 

 or oblong, acute, very rough above, smooth beneath ; panicles dense, leafy ; 

 peduncles pubescent ; rays 6 - 7 ; achenia sparsely pubescent. Swamps, 

 Georgia, and northward. Leaves 6'- 12' long. 



Var. strictula, Torr. & Gray. Stem simple, or with few elongated rough- 

 pubescent branches; leaves smaller; racemes short, forming a long and 

 slender compound raceme. Swamps, Florida, and northward. Sept. -Oct. 

 Stem 4 -6 high. 



24. S. juncea, Ait. Smooth; leaves sharply serrate, acute or acuminate 

 at each end, the lowest elliptical or lanceolate-oblong, somewhat 3-ribbed, on 

 winged and ciliate petioles ; the upper sessile ; panicle dense, somewhat corym- 

 bose ; heads small, crowded, 18- 20-flowered ; rays 8- 12, small; scales of the 

 involucre obtuse ; achenia nearly smooth. Rich soil in the upper districts. 

 Sept. Stem 2 -4 high. 



25. S. arguta, Ait., var. Caroliniana, Gray. Inflorescence pubescent, 

 otherwise glabrous; stem 2 -4 high, branching above ; lowest leaves large 

 (4' -6' long), ovate, sharply serrate, wing-petioled, upper ones lanceolate, 

 entire ; heads 3" long, crowded in short terminal recurved racemes, about 

 20-flowered ; achenia pubescent. Mountains of Georgia and North Carolina. 

 August. 



2f>. S. Boottii, Hook. Stem smooth, or pubescent above ; leaves lanceo- 

 late or oblong, acute or acuminate at each end, appressed-serrate, smooth or 

 more or less pubescent ; panicle open, oblong or pyramidal ; heads about 12- 

 flowered ; rays 5 ; scales of the involucre obtuse ; achenia nearly smooth. 

 Varies, with longer, narrower, and more sharply serrate leaves, and slender 

 racemose panicles towards the summits of the spreading branches. Sandy 

 soil, Florida to North Carolina. Sept. Stem 2 -3 high, often purplish. 



27. S. brachyphylla, Chapm. Stem slender, pubescent, sparingly 

 branched ; leaves smooth or pubescent on the veins, finely serrate, the lowest 

 spatulate, the upper oval or orbicular ; racemes short, forming a compound 

 raceme toward the end of the spreading branches ; scales of the 3 -5-flowered 

 involucre rigid, obtuse ; rays none ; achenia pubescent, as long as the rigid 

 pappus. Drv light soil, Georgia, Florida and we^wnrd. Pept. Stem 2- 

 3 high. Leaves 1 ' - 2' long. 



