360 ORDER LXVIII. COMPOSITE. 



the upper leaves distinct, truncate at the base. Flowers in large co- 

 rymbs ; involucre many-leaved, with acute, linear-lanceolate, pubescent 

 leaves. Seed angular. — White. If. Sept. — Oct. At Barhamville, 

 near Columbia. 3 — 6 feet. Boneset. 



17. E. ceaxothifo'lum, (Muhl.) Stem erect, glabrous, or slightly pu- 

 bescent. Leaves opposite, on short petioles, ovate-lanceolate, acuminate, 

 toothed, slightly scabrous, obtuse at the base. Flowers in terminal co- 

 rymbs; involucre with 10 nearly equal leaves, pubescent. Seeds an- 

 gled; pappus plumose. — White. 11 . Sept. — Oct. In rich soils, low 

 country. 2 — 3 feet 



18. E. ageratoi'dks, (Ell.) Stem erect, glabrous. Leaves usually op- 

 posite, ovate-lanceolate, acuminate, coarsely toothed, glabrous, on rather 

 long petioles. Flowers in corymbs ; involucre with 10 nearly equal 

 leaves. Seeds angled ; pappus slightly scabrous. — White. If. Sept 

 — Oct. On the seacoast. 2 — 3 feet. 



19. E. aromat'icum, (L.) Stem erect, terete, finely pubescent. 

 Leaves opposite, cordate, ovate, acute, coarsely toothed, finely pubes- 

 cent beneath. Flowers in terminal corymbs ; involucre with 10 nearly 

 equal leaves. Seed angled. — White. 2£. Fragrant. Aug. — Oct. 

 Dry rich soils. 2 — 3 feet. 



20. E. seroti'xum, (Mich.) Stem erect, almost tomentose. Leaves 

 ovate-lanceolate, large, tapering toward the summit ; the lower ones 

 opposite, the upper alternate, on rather long petioles. Flowers nu- 

 merous, in fastigiate corymbs; involucre with 10 linear, villous leaves. 

 Seeds angled; pappus scabrous. — White. If. Sept. — Oct. On the 

 seacoast. 5 — 6 feet. 



21. E. incarna'tum, (Walt.) Stem erect, very finely pubescent. 

 Leaves opposite, on long petioles, cordate, deltoid, obtusely toothed. 

 Flowers in terminal corymbs; involucre with 15 — 20 nearly equal 

 scales, slightly pubescent. Seed angled ; pappus pilose. — Purple. 

 Oct. — Nov. In rich soils. 2 — 3 feet. 



c. Lnvolucre with the scales scarlous. Leaves verticillate. 



22. E. ternifo'lium, (Ell.) Stem erect, striate, pubescent. Leaves 

 usually ternate, petiolate, ovate, acuminate, pubescent beneath, tooth- 

 ed, dotted on the under surface. Flowers in terminal corymbs ; invo- 

 lucre with about 15 linear lanceolate leaves, the exterior ones shorter 

 and broader. Seed angled ; pappus pilose. — Light-purple. 2f. Sept 

 — Oct. Damp soils. 3 — 4 feet. 



23. E. purpu'reum, (L.) Stem erect, glabrous, or nearly so, tinged 

 with purple. Leaves 4 — 6 in a whorl, oval, lanceolate, petiolate, ser- 

 rate, somewhat pubescent on the under surface, dotted. Flowers in 

 large, terminal corymbs ; involucre generally 5 flowered, with the leaves 

 slightly pubescent. Seed angled; pappus pilose. — Pale purple. If. 

 Sept. — Oct. Moist soils. 4 — 8 feet 



24. E. ma( ti.a'tcm, (L.) Stem erect, furrowed, with purple dots. 

 Leaves 4 — 5 in a whorl, ovate, lanceolate, acute at each end, pubescent 

 beneath, unequally serrate. Flower* in terminal corymbs; involucre 

 6 — 8-flowered. Seed ingled — Pale purple, if. Aug. — Sept. Moist 

 soils. 4- — 5 feel. 



26. E. verticili.a'tum, (L.) Stc7n erect, glabrous or pubescent to- 

 ward the summit, tinged with purple. Leaves 3 — 1 in a whorl, ovate- 



