372 ORDER LXYIII. COMPOSITE. 



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

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



16. 8. cineras'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. %. 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. If. Sept.— Oct, In rich 

 soils. Low country. S. Elliottii, T. <fe 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. IX- Sept. — Oct 

 Mountains. 



20. S. reteor'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. % . 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. 11. 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- 

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

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



23. S guac.i. Lima, T. & G.) Stem virgate, glabrous, branched to- 

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

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

 racemes, 10 — 15 florets , rays mostly wanting. Achmia pubescent. — 

 Middle Florida. '2—3 feet 



2 1. S. COSTMBo'sa, (Ell.) Stem erect, branching near the summit, 

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

 dent d along the margin, oblong-lanceolate, somewhat fleshy ; t be upper 

 entire, uiliate along the margin. F l ow er* in corymbose racemes, lower 

 brandies recurved ; involucre with pubescent, abate scales; ray florets 



