ORDER LXVIII. C0MP0S1T.E. 37P> 



10. Seed glabrous.— Yellow, If. Sept.— Oct. Middle Geo. 4—6 

 feet. 



25. S. SKMPEUviRENS, (L.) Stem erect, glabrous, with recurved 

 branches toward the summit. Leaves linear-laiiceolate, long, acute, 

 scabrous along the margin, entire. Flowers in axillary racemes, small ; 

 involucre with linear-lanceolate scales; ray florets generally 5. — Yel- 

 low. U. Sept. — Oct. In rich soils. Common. 3—6 feet. 



a. Racemes erect. 



26. S. limonifo'lia, (Pers.) Stem oblique, glabrous, usually colored. 

 Leaves sessile, lanceolate, somewhat fleshy, entire, glabrous. Flowers 

 in erect, paniculate racemes ; involucre with linear, acute scales ; ray 

 florets 7 — 10. Seed pubescent. — Yellow. 1(. Aug. — Oct. On the 

 sea- coast. 3 — 5 feet. 



27. S. amplexicau'lis, (Mar.) ;iS/e?« velvety pubescent, loosely branch- 

 ed. Leaves ovate or oblong, serrate ; lower ones acuminate, cla8])ing 

 the stem, pubescent beneath ; upper ones ovate-lanceolate. Heads 

 small, in paniculate, secund racemes ; ray florets 1 — 2 ; disk 5 — 8. 

 Achenia pubescent. — Florida. 2 — 4 feet. 



28. S. brachypiiyl'la, (Chap.) Stem scabrous, pubescent, leafy. 

 Leaves spatulate, oval, or ovate, glabrous; lower ones serrate. Branches 

 in virgate panicles. Heads racemose, secund ; ray florets none ; disk 5 

 — 6. Achenia canescent. — Geo. and Flor. 4 — 6 feet. 



29. S. spEcio'sA, (Nutt.) Stem erect, slightly furrowed, glabrous, 

 with virgate branches, pubescent when young. Leaves broad-hmceo- 

 late, coriaceous ; upper ones entire, the lower slightly serrate. Flow- 

 ers in uumerovis erect racemes; involucre with oblong, obtuse scales; 

 ray florets 6. Seed glabrous. — Yellow. If. Sept. — Oct. Middle 

 Geo. 3—8 feet. 



30. S. PUBEs'cENs, (Ell.) Ste7n erect, pubescent, with numerous erect 

 branches. Leaves long, lanceolate ; the upper ones generally entire, 

 pubescent ; the lower serrate, slightly scabrous, spatulate. F/oiccrs in 

 paniculate racemes; involucre with pubescent, subulate scales; ray 

 florets 7 — 10. Seeds pubescent. — Yellow. If. Oct. Damp soils. 

 Middle Geo. 3 — 5 feet. S. piiberula, Nutt. 



31. S. PAUCiFLOscuLo'sA, (Mich.) Slem erect, somewhat shrubby, gla- 

 brous. Leaves lanceolate, obtuse. Flowers in compound panicles ; in- 

 volucre oblong, 5-flowered ; ray floret 1. — Yellow. If. Aug. — Oct. 

 In pine-barrens, on the coast. 



32. S. bico'lor, (L.) Stem erect, pubescent. Leaves oblong-lanceo- 

 late ; the lower ones serrate, attenuate at the base, |)ubescent. Flow- 

 ers in compact racemes; involucre with obtuse, linear-lanceolate scales ; 

 ray florets 5—8. — Nearly white. If. Sept. — Oct. Dry pastures, i 

 —3 feet. 



33. S. petiola'ris, (Ait.) Stem erect, striate, villou.s. Leaves oval- 

 lanceolate, pubescent ; upper ones nearly sessile ; the lower attenuate, 

 with a sheath-like petiole, serrate. Flowers in long, terminal racemes ; 

 involucre with oblong, pubescent scales ; ray florets 6 — 8. Seed gla- 

 brous. — Yellow. U- Aug. — Sept. Mountains. 2—3 feet. 



34. S. STRn'TA, (Ait.) Stejn erect, glabrous. Leaves lanceolate, en- 

 tire, glabrous, with scabrous margins; radical ones serrate. Flowers in 



