372 ORDER LXVm. COMPOSITE. 



glabrous, serrate above the middle. Heads many-flowered ; rays smalL 

 — N. C, Roan Mountain. 8 — 10 inches. 



16. S. ctneras'cens, (Schw.) Stem erect, pubescent, slender, with nu- 

 merous slender, expanding branches toward the summit. Leaves long, 

 linear-lanceolate ; radical ones with a long, tapering base, slightly ser- 

 rate ; cauline ones small, and scattered toward the summit. Flowers 

 in paniculate racemes ; racemes secund, with the pedicels often 3-flow- 

 ered.— Yellow, y. Sept.— Oct. Middle Geo. 



17. S. jun'cea, (L.) Stem erect, slender, glabrous, sometimes pubes- 

 cent ; branches pubescent when young. Leaves long-lanceolate, gla- 

 brous, or pubescent, with scabrous margins ; the lower ones serrate, ob- 

 scurely 3-veined. Flowers in loose, terminal, paniculate racemes ; ra- 

 cemes secund, recurved ; involucre with oval, slightly pubescent scales. 

 — Yellow. 2£. Sept. — Oct. Upper districts of Car. and Geo. 



S. Boottii, Hook. 



18. S. ellip'tica, (Ell.) Stem erect, glabrous, with numerous recurv 

 ed branches toward the summit. Leaves oval-lanceolate or elliptic, ser- 

 rate, glabrous, with scabrous margins. Flowers in paniculate racemes; 

 racemes secund, expanding, leafy ; involucre with acute, linear scales, 

 glabrous; rays 8 — 10; disk 5 — 7. — Yellow. 21. Sept. — Oct. In rich 

 soils. Low country. S. Elliottii, T. & G. 



19. S. odo'ra, (Ait.) Stem erect, pubescent toward the summit, 

 branching. Leaves sessile, linear-lanceolate, glabrous, entire, with sca- 

 brous margins. Flowers in paniculate racemes ; racemes recurved ; 

 involucre with linear-lanceolate scales. — Yellow. If. Sept. — Oct 

 Mountains. 



20. S. ketrok'sa, (Mich.) Stem erect, glabrous or pubescent toward 

 the summit. Leaves linear, sessile, tapering at the summit, glabrous, 

 reflexed, scabrous along the margin. Flowers in paniculate racemes ; 

 racemes recurved ; involucre with ciliate-lanceolate scales; ray florets 

 3; of the disk 3 — 4. — Yellow. 2£. Aug. — Oct. Very common. 



21. S. tortifo'lia, (Ell.) Stem erect, pubescent toward the summit. 

 Leaves linear-lanceolate, slightly serrate, obscurely 3-veined, usually 

 twisted. Flowers in compact, paniculate racemes, recurved ; involucre 

 with linear-lanceolate scales; ray florets 3 — 5. — Yellow. 2£. Aug. — 

 Oct. Very common. 2 — 3 feet. 



22. S. pyramida'ta, (Mich.) Stem erect, terete, hispid. Leaves ob- 

 long, ovate ; margin serrulate, scabrous, somewhat amplexicaul ; mid 

 rib pubescent. Flowers in paniculate, filiform racemes : racemes se- 

 cund, recurved, pubescent. Corolla small, ligulate, minute. Seed 

 smooth. — Yellow. If. Aug. — Sept. Pine-barrens. 4 — 6 feet. 



23. S. qracil'lima, (T. & G.) Stem virgate, glabrous, branched to- 

 ward the summit ; branches long and slender, leafy. Leaves spatulate, 

 linear, entire, sometimes the lower serrate. Heads obconie, in secund 

 racemes, 10 — 15 florets ; rays mostly wanting. Achenia pubescent. — ■ 

 Middle Florida. 2—3 feet. 



24. S. corymbo'sa, (Ell.) Stem erect, branching near the summit, 

 glabrous, with the young branches hirsute. Radical leaves long, in- 

 dented along the margin, oblong-lanceolate, somewhat fleshy ; the upper 

 entire, ciliate along the margin. Flowers in corymbose racemes, lower 

 branches recurved ; involucre with pubescent, ciliate scales ; ray floreta 



