180 DICOTYLEDONOUS. 



what petiolate. Flowers in short, erect, axillary and terminal racemes; in- 

 volucre witli linear scales ; ray florets 7-10. Seed glabrous. 

 Pale yellow. '2j-. Sept— Oct. Damp soils. 2-3 feet. 



31. S. CcEsiA. Stem erect, glabrous, with numerous, slender, expanding 

 branches, slightly tinged with purple. Leaves sessile, lanceolate, acuminate, 

 finely serrate, with the margins slightly scabrous. Flon-ers in erect racemes ; 

 involucre with linear scales : ray florets generally 5. Seed nearlv glabrous. 



Yellow. %. Sept.— Oct. " Upper districts'of Car. Ga. 2-3 feet. 



32. S. LiTHOSPERMiFOLiA. Stem erect, branching, pubescent. Leaves lan- 

 ceolate, scabrous on both siu-faces, tapering, 3 veined, entire. Flowers in 

 erect racemes ; ray florets long. 



Yellow. % August — Oct. Sandy, barren soils. 2-3 feet. 



33. S. Flexicaulis. Stem slender, flexuous, glabrous, angled. Leaves 

 ovate-lanceolate, acuminate, serrate, glabrous, attenuate at the base. Flowers 

 in erect, axillary racemes ; involucre with Unear scales; ray florets gener- 

 ally 5, disk 7-8. Seed hairy. 



Yellow. % Sept.- Oct. Upper district Car. Ga. 2-3 feet. 



34. S. Glomerata. Stem simple, small Leaves glabrous, oblong-lanceo- 

 late, serrate, lower ones broad, acuminate. Flowers in simple racemes, com- 

 posed of axillary heads, the upper ones clustered ; involucre swollen, many 

 flowered. 



Yellow. % August. — Sept. Mountains. 



35 S. Squarrosa. Stem erect, pubescent, striate, branching. Zeares lan- 

 ceolate, acute, serrate towards the apex, pubescent beneath, the lower ones 

 tapering at the base into a petiole. Flon-ers in compound, erect racemes, 

 large ; involucre with reflexed, linear scales ; ray florets generally 10, the 

 disk numerous. Seed glabrous. 



Yellow. Tj- Sept.— Oct. Sandy soils. 3-5 feet. 



36. S. Angustifolia. Stem erect, glabrous, with numerous erect branch- 

 es, generally colored. Leaves sessile, subulate entire, nearly hnear, somewhat 

 scabrous along the margins, sometimes with axillary clusters] of setaceous 

 leaves. Floicers in erect paniculate racemes ; involucre with glabrous hnear- 

 lanceolate scales; ray florets 7-10. 



Yellow. %. Sept. — Oct. Rich soils. On the sea coast. 2-3 feet. 



37. S. Salicina. S^em erect, slender, pubescent Mhen young, nearly gla- 

 brous when old, ^^•ith long erect virgate branches. Leaves sessile, the lower 

 ones long, narrow-lanceolate, scabrous on the upper surface, glabrous on the 

 under, upper leaves smaller. Flotcers in long slender racemes; involucre 

 with oblong scales ; ray florets slender, generally 5. 



Yellow. '^-. September— October. xMid die Georgia. 4-5 feet. 



38. S. Elata. Stem erect, terete, pubescent, with erect tomentose branch- 

 es. Leaves sessile, oval-lanceolate, acute, tomentose beneath, nearly entire. — 

 Flowers in erect paniculate racemes, involucre with pubescent, linear-lanceo- 

 late scales ; ray florets 7-10. Seed glabrous. 



Yellow. %. September— October. Middle Georgia. 2-3 feet. 



39. S. RiGiDA. Stem erect, slightly angled, tomentose, when young 

 branches numerous, fastigiate. Leaves ovate, sessile, pubescent, scabrous, 

 upper ones entire, the lower serrate. Flowers clustered near the summit of 

 the branches, large ; involucre with oblong pubescent scales ; ray florets 7-10, 

 those of the disk, numerous. Seed glabrous. 



Yellow. 74.. September—October. Mountains. 3-4 feet. 



40. S. Gra^^iixifolia. Stem angled, slighdy furrowed, branches numerous, 

 expanding, angles pubescent. Leaves hnear, numerous, obscurely veined, 

 puoescent along the veins on the under surface. Floicers in fastigiate, termi- 

 nal corymbs ; involucre with numerous, viscid Unear-lanceolate scales ; ray 

 florets 10, short. Seeds villous- 



Yellow. %. September— October. Damp rich soils. 2-3 feet 



41. S. Tenuifolia. Stem erect, angled, scabrous, with fastigiate branches. 

 Leaves linear, expanding, obscurely veined, scabrous, clusters of small 



