374 ORDER LXVIII. COMPOSITE. 



erect, paniculate racemes. — Yellow. U- Aug. — Sept. In sandy 

 woods. 2 feet. 



85. S. gigan'tka, (Ait.) Stem stout, smooth. Leaves lanceolate, acu- 

 minate, glabrous, sharply serrate. Flowers in racemose panicles ; heads 

 large; ray florets conspicuous. Achenia pubescent. — Yellow. Ala. 

 and North and West. 3 — 7 feet. 



36. S. virga'ta, (Mich.) Stem erect, striate, slender toward the sum- 

 mit, nearly glabrous. Radical leaves very long, spatulate-lanceolate ; 

 cauline ones diminishing toward the summit, oblong-lanceolate, some- 

 what fleshy, scabrous along the margins, appressed ; involucre with 

 linear-lanceolate pubescent scales ; ray florets 5 — 7. Seed hairy. — Yel- 

 low. 11. June — Oct. Damp soils. 2 — 4 feet. 



37. S. pulverulen'ta, (Nutt.) Stem erect, slender toward the sum- 

 mit, reddish, covered with a pulverulent pubescence. Leaves sessile ; 

 the lower ones acute, serrate, elliptic ; the upper entire, with scabrous 

 margins, obovate. Flowers in erect racemes ; ray florets long. — Yellow. 

 U . Aug. — Sept. Low country. 3 — 4 feet. 



38. S. ereo'ta, (Pursh.) Stem erect, simple, somewhat pubescent 

 toward the summit. Leaves lanceolate, glabrous, acute at each end ; 

 the lower ones somewhat petiolate. Flowers in short, erect, axillary, 

 and terminal racemes; involucre with linear scales; ray florets 7 — 10. 

 Seed glabrous. — Pale yellow. If. Sept. — Oct. Damp soils. 2 — 3 

 feet. S. speciosa. 



39. S. oe'sia, (L.) Stem erect, glabrous, with numerous slender, 

 expanding branches, slightly tinged with purple. Leaves sessile, lance- 

 olate, acuminate, finely serrate, with the margins slightly scabrous. 

 Flowers in erect racemes; involucre with linear scales; ray florets gen- 

 erally 5. Seed nearly glabrous. — Yellow. If. Sept. — Oct. Upper 

 districts of Car. and Geo. 2 — 3 feet. 



40. S. flexicau'lis, (Ait.) Stem slender, flexuous, glabrous, angled. 

 Leaves ovate-lanceolate, acuminate, serrate, glabrous, attenuate at the 

 base. Flowers in erect, axillary racemes ; involucre with linear scales ; 

 ray florets generally 5 ; disk 7 — 8. Seed hairy. — Yellow. If . Sept. 

 — Oct. Upper district of Car. and Geo. 2 — 3 feet. S. latifolia, L. 



41. S. glomera'ta, (Mich.) Stem simple, small. Leaves glabrous, 

 oblong-lanceolate, serrate ; lower ones broad, acuminate. Flowers in 

 simple racemes, composed of axillary heads, the upper ones clustered ; 

 involucre swollen, many-flowered. — Yellow. If. Aug. — Sept. Moun- 

 tains. 



42. S. squarrosa, (Muhl.) Stem erect, pubescent, striate, branching. 

 Leaves lanceolate, acute, serrate toward the apex, pubescent beneath; 

 the lower ones tapering at the base into a petiole. Flowers in com- 

 pound, erect racemes, large; involucre with reflexed, linear scales; ray 

 florets generally 10, the disk numerous. Seed glabrous. — Yellow, 2£. 

 Sept. — Oct. Sandy soils. 3 — 5 feet. 



43. S. angistifo'lia, (Ell.) Stem erect, glabrous, with numerous 

 erect, branches, generally colored. Leaves sessile, subulate, entire, 

 nearly linear, somewhat scabrous along the margins, sometimes with 

 axillary clusters of setaceous leaves. Flowers in erect, paniculate ra- 

 cemes; involucre with glabrous, linear-lanceolate scales; ray florets 7 

 — 10. — Yellow. If. Sept. — Oct. Rich soils. On the sea-coast. 2 — 

 3 feet. 



