418 ORDER 70. COMPOSITE. 



tapering to a long point, and both combined, are 8 to 14' in length. Hds. 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. resindsum Torr. St. minutely tomentous; Ivs. linear-lanceolate, closely 

 sessile, distinct, tapering to a long acumination, divaricate with the stem, slightly 

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

 15-flowered: scales obtuse, hoary -tomentous. Wet, sandy soils, 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 E. serotinum MX. St. sofl-puberulent, diffusely branched; Ivs. petiolate, 

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

 corymbs compound; hds. 12 to 15-flowered; scales 9 to 11, nearly alike, scarious- 

 edged, very pubescent. Ind. to Iowa (Cousens), and Ga. (Miss Keen). St. 4 to 

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

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



21 E. ageratoides L. St. smooth, branched; Ivs. on long petioles, subcordate, 

 ovate, acuminate, dentate, 3-veined, nearly smooth; corymbs compound; invol. 

 simple, smooth. Rocky hills and woods, Can. and U. S. St. round, 2 to 4f high, 

 and with the whole plant nearly smooth. Lvs. large, 3 to 6' long, 2 to 4 r broad 

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

 constituting a compound corymb. Invol. scales mostly in a row, containing 1 2 

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



22 E. aromaticum L. St. rough, pubescent, corymbous at summit ; Ivs. petio- 

 late, opposite, subcordate, lance-ovate, acute, 3-veiued, obtusely serrate, smoothish ; 

 invol. simple, of about 12 lance-linear' pubescent scales. A handsome species, in 

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

 to 4' long, as wide, on petioles less than an inch long. Hds. of the fls. large, 

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

 Aug., Sept. 



23 E. incarnatum Walt. Minutely scabrous, diffusely branched; Ivs. deltoid- 

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

 on slender ped., about 20-flowered; scales 12 to 15, linear-acuminate, faintly 2- 

 striate, glabrous; cor. lobes pale-purple. Damp soils, N. Car. (Shriver) to Fla. 

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

 Nov. Approaches Conoclinium, but readily distinguished by its short, blunt styles. 



11. MIKA'NIA, Willd. CLIMBING BOXESET. (In honor of Prof. 

 Mikan, of Prague.) Flowers all tubular, ; involucre 4-leaved, 4-flow- 

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

 partly exserted ; achenia angled. Mostly climbing herbs. Lvs. oppo- 

 site. 



.M. scandens Willd. St. smooth ; Ivs. cordate, repand-toothed, acuminate, the 

 lobes divaricate, rather unequal ; hds. in pedunculate, axillary corymbs. 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 in a head. Aug., Sept. 



12. CONOCLIN'IUM, DC. (Gr. K&VO$. a cone, Khivrj, bed or recepta- 

 cle.) Heads many-flowered; receptacle conical, character otherwise as 

 in Eupatorium. If. Herbaceous or suffruticous. Lvs. opposite, petio- 

 late, serrate. Fls. blue or purple, in crowded corymbs. 



<.C. ccelestiimm DC. Herbaceous, nearly glabrous, much-branched, Ivs. deltoid- 

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

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

 ous, subumbellate , scales numerous, linear. Hedges, thickets, roadsides, &c., 

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



