4] 8 Order TO.— COMPOSIT.E. 



tapering to a long point, and both combined, are 8 to 14' in longth. Hda. about 

 12-flowered, clustered in large, terminal corymbs. Cor. white. Aug. — The plant 

 is bitter, and is used in medicine as a tonic. 



19 B. resinosum Torr. St. minutely tomentous; lus. linear-lanceolate, chsely 

 sessile, disiitict, tapering to a long acumination, divaricate with the atom, slightly 

 viscidly resinous-glandular both sides; corymb fastigiate, compound; hds. 10 to 

 15-flowered; scales obtuse, hoary-tomentous. — Wet, sandy aoil.g, N. J., Penn. St. 

 2 to 3f high, growing in tufts. Lvs. 3 to 6' by 3 to 6". Aug., Sept. — This sin- 

 gular species appears to be nearly confined to the pine barrens of N". J., where it 

 was first found by Dr. Torrey. 



20 B. serdtinum Mx. St. soft-puberulent, diffusely branched ; lvs. petiolule, 

 lance-ovate, acute or acuminate, sharply serrate, triple- veined, nearly glabrous; 

 corymbs compound; his. 12 to 15-fiowered; scales 9 to 11, nearly alike, scarious- 

 edgod, very pubescent. — Ind. to Iowa (Cousona), and Ga. (Miss Keen). St. 4 to 

 6f high, somewhat paniculate above. Lvs. 4 to G' by J to 1-J-', upper ones nearly 

 entire, scattered ; lower ones opposite, with largo irregular serraturos. Sept., Oct. 



21 B. ageratoides L. St. smooth, branched; lvs. on long petioles, subcordate, 

 mate, acuminate, dentate, 3-voined, nearly .smootli; corymbs compound; invol. 

 simple, smootli. — Eooky liiUs and woods. Can. and XJ. S. St round, 2 to 4f high, 

 and vi'ith the whole plant nearly smootli. Lvs. large, 3 to 6' long, 2 to 4' broad 

 at base, coarsely toothed, petioles 1 to 2' long. Eds. numerous, in small clusters, 

 constituting a compound corymb. Invol. scales mostly in a row, containing D 2 

 or more flowers of a pure white. Aug., Sept 



&2 E. aromdticum L. St. rough, piibescent, corymbous at summit; las. petio- 

 late, opposite, subcordate, lance-ovale, acute, S-veined, obtusely serrate, smoothish ; 

 invol. simple, of about 12 lance-linear pubescent scales. — A handsome specios, in 

 low woods, Mass. to La. Whole plant slightly pubescent, about 2f high. Lvs. 2 

 to 4' long, J as wide, on petioles leas than an inch long. Hds. of the fls. largo, 

 10 to 15-flowered, white and aromatic, in small corymbs. Scales about equal. 

 Aug., Sept. 



23 E. incamStum Walt. Minutely scabrous, diffusely- branched; lvs. deUoid- 

 ovate, long-petioled, pointed, coarsely crenate-toothed, truncate or cordate; hds. 

 on slender ped., about- 2 0-flowered; scales 12 to 15, linear-acuminate, faintly 2- 

 atriato, glabrous; cor. hbes pale-purple. — Damp soils, N". Car. (Shriver) to Pla. 

 (Chapman) and Tex. Height 2 to 3f. Corymbs very loose, paniculate. Sept., 

 Nov. Approaches ConocUnium, but readily distmguished by its short, blunt EtyJes. 



11. MIKA'RIA, WillJ. Climbing Boneset. (In honor of Fro/. 

 Mikan, of Prague.) Flowers all tubular, >i ; involacre 4-lcavcci, 4-flow- 

 ered ; receptacle naked ; pappus capillary, simple, scabrous ; anthers 

 partly exsertcd ; achenia angled. — Mostly climbing herbs. Lvs. oppo- 

 site. 



M. scdndens Willd. St. smooth ; lvs. cordate, repand-toothed, acuminate, the 

 lobes divaricate, rather unequal ; hds. in pedunculate, axiUary corymba — A beau- 

 tiful climber of wet thickets, Mass. to Ga. (Miss Keen) and La., rather rare. Every 

 part smooth. Lvs. 2 to 3' by 1 to 2', on petioles 1 to 2' long, apex tapering to a 

 long point. Branches short, nearly naked, each bearing a small corymb of white 

 or pink colored fls., almost always 4 iu a head. Aug., Sept 



12. CONOCLIN'IUffl, DC. (Gr. auvog, a cone, kXivt^, bed or recepta- 

 cle.) Heads many-flowered ; receptacle conical, character otherwise r»s 

 iu Eupatoriuni. — 1( Herbaceous or suffruticous. Lvs. opposite, petio- 

 late, serrate. Fls. blue or purple, in crowd«d corymbs. 



C. coelestinum DC. Herbaceous, nearly glabrous, much-branched, lvs. deltoid- 

 ovate, truncate or subcordate at base, tapering to an obtusish apex, crcnate-ser- 

 rate, 3-veined, petiole slender, about half as long as the lamina; corymbs numer- 

 ous, subnmbeJlate ; scales numerous, linear. — Hedges, thickets, roadsides, &c, 

 Penn-, Southern and W. States. St. 1 to 2\( high, terete, with opposite branches. 



