416 Obder fO.— COMPOSITE. 



upper setaceous, simple, fascicled; lids, small, very numerous, 3 to 5-flowered, on 

 short pedicels ; scales 8 to 10, mucronate. — A common weed, in fields and damp 

 soils, Va. to Fla. St. 3 to lOf high, bearing innumerable fine cut lvs. and a com- 

 pound pyramidal panicle of innumerable hds. Fls. yellowish-white, littlo more 

 than 1" loug. Lvs. often channeled on the upper side. Sept., Oct. 



2 E. coronopifdlium Willd. Much branched, pubescent; lvs. mostly alternate 

 (the lower opposite), the lower twice pinnatifid ivith lance-linear lobes and segments ; 

 tipper lvs. linear, fascicled;, hds. small, very numerous, 5-flowered; scales 10, 

 with scarious margins and cuspidate points. — In dry, thin soils, N. Car., Ga. to 

 Fla., common. St. 3 to 5f high. Lvs. and fls. immensely numerous, as in No. 1. 

 Fls. white, about 2" long. Paniclo often 2f long. Sept., Oct. — Distinct from 

 No. 1 ? 



3 E. pinnatifidum Ell. Pubescent; lvs. laciniate-pinnatifid, segm. linear, toothod 

 or entire, the lower whorled in 4s, middle opposite, upper alternate ; hds. small, 

 numerous, 5 to 9-flowered, in a fastigiato corymb ; scales oblong, mucronate. — ■ 

 Pine barrens, Car. to Fla. Height 3 to 4f. Hds. about the size of No. 2, to which 

 this species is evidently related. 



4 E. ivaefclium L. St. terete, branched ; lvs. opposite, lanceolate, tapering to 

 each end, subsessile, subserrate, 3-veined; hds. pedicellate, 15 to 20-fiowered ; 

 scales 20, imbricated, the outer gradually shorter, all erect, obtuse, with 3 to 5 dis* 

 Unci strice. — Woods, near N. Orleans. Herb 3 to 5f high. Lvs. 2 to 3' long. 

 Florets light blue, in a few large, corymbed hds. Aug., Sept. 



5 E. ptirpurenm L. (not of "Willd., Ph., nor DC.) Si. solid, green, or sometimes 

 purplish, with a purplo band at the joints about 1' wide; lvs. feather-veined, in 

 whorls of 3s, 4s and 5s (rarely in 2s), ovate, smooth above, downy on tin vekia 

 beneatli, coarsely serrate. — Dry woods and meadows, common. St. 3 to Gf high. 

 Lvs. large, thin, 8 to 10' by 4 to 5'. Corymb lax, palo purple, varying to whitish. 

 Aug., Sept. (E. trifoliatum Darl.) 



p. ternifoliusi. St. solid, slender, green, with a purple blush ; lvs. in 3s, 

 very thin, lanceolate. — Mountain woods, etc. Height about 3f. 



6 E. maculatum L. Purple Boneset. St. solid, striate, hispid or pubescent, 

 greenish and purplo, with numerous glands and purple lines, the glands on the 

 stems and loaves give out an acrid effluvium in flowering time ; lvs. trinli-veined, 

 3 to 5 in a whorl, ovate. — Low grounds, U. S. and Can. Herb 4 to Gf high. 

 Lvs. petiolate, G to 1' by 3 to 4', usually pointed, strongly serrate. Fls. purple. 

 Jl., Sept. ( E. purpureum p. Darl.) 



p. urticifolium Barratt. Slender ; lvs. thin, much elongated, — height 4 to 5£ 



7 E. fistulosum Barratt. Trumpet Weed. St. fistulous, glabrous, glaucous- 

 purple, striate or fluted ; lvs. oblong-lanceolate, in whorls of 5s or 6s, laigest in the 

 middlo of tho stem, rather finely glandular serrate, midvein and veinlets livid- 

 purple ; corymb globous, with whorled peduncles. — A majestic herb, thickets, 

 U. S. and Can. Height G to lOf, hollow its wholo length. Lvs. including tho 1' 

 petioles, 8' by 2'. Corymb often If diam. It does not appear to posses tho acrid 

 properties of E. maculatum. Jl. — Sept. (E. purpureum Willd. in part. p. an- 

 gustifolium T. & Gr.) — Intermediato forms occur, rendering tho distinctions of 

 this species and the two preceding numbers a gravo question. 



8 E. album L. Scabrous-pubescent ; lvs. oblong-lanceolate, strongly serrate, ses- 

 sile, rather acute, obscurely 3-veined; corymb fastigiato; hds. clustered, oblong, 

 5-flowered; scales 8 to 14, lance-linear, tipped with a white, scarious acumination, 

 longer than the fls. ; cyps. glandular. — Sandy soils, Penn. to La. St. about 2f 

 high, corymbously divided above. Lvs. 2 to 3' by \ to 1', upper ones entiro and 

 alternate. Invol. concealing tho fls., and with them copiously sprinkled with 

 resinous dots, whitish. Aug. — Oct. (E. glandulosum Mx.) — A variety has tho 

 leaves rather obtuse and crenate. (Tenn.) 



9 E. leucolepis Torr. & Gr. Nearly glabrous; st. simple; lvs. linear-lanceolate, 

 obtuse, closely sessile, serrate, lower ones obscurely tripli-veined ; corymb fasti- 

 giate, canescent; hds. 5-flowered; scales 8 to 10, scarious and white at the sum- 

 mit, as long as the fls.— Sandy fields, N. J. to La. St. 2 to 3f high. Lvs. 1$ to 

 to 2\' by \ to I', glaucous-green both sides, divaricate with tho stems, upper onea 



