ORDER LXVIII. COMPOSITE. 373 



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

 feet. 



25. S. sempervi'rens, (L.) Stem erect, glabrous, with recurved 

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

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

 involucre with linear-lanceolate scales; ray florets generally 6. — Yel- 

 low. 2f • 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. 2f. Aug. — Oct. On the 

 sea coast. 3 — 5 feet. 



27. S. amplexicau'lis, (Mar.) Stem velvety pubescent, loosely branch- 

 ed. Leaves ovate or oblong, serrate ; lower ones acuminate, clasping 

 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. brachyphyl'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-lanceo- 

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

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

 ray florets 5. Seed glabrous. — Yellow. If. Sept. — Oct. Middle 

 Geo. 3—8 feet. 



30. S. pubes'cens, (Ell.) Stem erect, pubescent, with numerous erect 

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

 pubescent ; the lower serrate, slightly scabrous, spatulate. Flowers 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. puberula, Nutt. 



31. S. pauciflosculo'sa, (Mich.) Stem erect, somewhat shrubby, gla- 

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

 volucre oblong, 5-flowered ; ray floret 1. — Yellow. 2f. 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, pubescent. Flow- 

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

 ray florets 5 — 8. — Nearly white. 2f . Sept. — Oct. Dry pastures. 2 

 —3 feet. 



33. S. petiola'ris, (Ait.) Stem erect, striate, villous. 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. If. Aug. — Sept. Mountains. 2 — 3 feet. 



34. S. stric'ta, (Ait.) Stem erect, glabrous. Leaves lanceolate, en- 

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



