ORDER 70. COMPOSITE. 159 



2 E. coronopllolium Willd. Much branched, pubescent; leaves mostly alternate 



(the lower opp.), twice pinnatifid, with lance-linear lobes and segm., the upper linear, 

 pimple ; hds. 5-flowered, scales 10. Dry soils, S. 3 5f. Flowers white, 2". 



3 E. piuiiat;fidum Ell. Pubescent; Ivs. laciniate-pinnatifid, segm. linear, toothed 



or entire, the lower whorled in 4's, middle opp., upper altern. ; corymb fastigiate ; 

 hds. small, GO, 5-9-flowered ; scales oblong, mticronate. Pine woods, S. 3 4f. 



4 E. ivielolium L. Lvs. opposite, lanceolate, tapering to each end, 3-veiued; heads 



pedicellate, 15-20-flowered ; scales 20, imbricated, erect, obtuse, with 35 distinct 

 stria?. Woods, Miss, and Fla. 3 5f. Blue. 



5 E. purpureum L. Stem solid, purple at the joints ; Ivs. feather-veined, in whorls 



of 3' s 5's, thin, ovate to lanceolate, coarsely serrate. Dry. 3 6f. 



6 E. fistulosum Barratt. Trumpet-weed. Stem hollow, striate, glabrous, glaucous- 



purple; Ivs. lance-oblong, in 5's, 6's, finely serrate ; corymb globous, with whorled 

 rays. Thickets. 6 lOf. Lvs. S'. Corymbs If. (E. purpureum. ft. T. & G.) 



7 E. macula.tum L. Stem solid, marked with purple glands and lines ; leaves 3- 



veined. ovate, in 3's 5's. Low grounds: common. 3 5f. (E. purpureum. /3. Darl.) 



8 E. sca.brid.um Ell. ? (Chapm.) St. stout, tomentous ; Ivs. lance-ovate, acute, scr., 



3-veined from base ; scales lance-obi., cuspidate, edged, shorter than fls. Car. Fla. 2f. 



9 E. album L. Rough-downy ; Ivs. lance-oblong, acutish ; lids, oblong, 5-llowered ; 



scales white-scarious at the point, longer than the fls. Sands, N. J. and S. 2f. 



10 E. leucolepis T. & G. Nearly smooth ; Ivs. lance-linear, obtuse ; heads 5-flwd. ; 

 scales white-scarious at the tip, as long as the fls. Sands, L. I. and S. 2 3f. 



HE. liyssopifolium L. Lvs. linear-lanceolate, 1 -3-veined, punctate, lower ones 

 eubserrate, upper ones .entire ; scales oval. Dry. Mass., W. and S. 2f. Hds. 3". 



1 2 E. parviflorum Ell. Lvs. lanceolate, sessile, acutely serrate above, 3-veined ; 

 heads 2", crowded ; outer scales very short, inner linear. Damp. Va. to Fla. 2 3f. 



13 E. altissimum L. Tall, downy; Ivs. lanceolate, few-toothed above, conspicu- 

 ously 3-veined ; scales 8 12, elliptical, 2^" ; fls. 5". Dry. Pa. to Car., and W. 3 7f. 



14 E. cuneifolium Willd. Downy; Ivs. small, glaucous, obovatc-oblong, 3-veined. 

 apex obtuse and subserrate ; scales oval, V ; fls. 4". Rich shades, S. Car. to Fla. 2f , 



1 5 E. teucrifolium Willd. Rough-downy ; leaves sessile, ovate, veiny, the low.r 

 doubly serr. ; scales elliptical, faintly striate, rather acute. Damp. Mass, to La. 2 3f. 



16 E. sessilii'olium L. Smooth; leaves half-clasping, lance-ovate, serrate; inner 

 scales oblong-obovate, obtuse. Rocky woods, Mass, to Ind., and S. 2 if. Lvs. 35'. 



17 E. rotuiidilolium Willd. Iloarhmmd. Downy; Ivs. roundish ovate, subcor- 

 date, 3-veined, sessile, coarsely toothed ; inner scales acuminate, as long as the fls. Dry 

 fields, N. J. and S. A compact, bushy plant. 3f. 



18 E. mikanio ides Chapm. St. creeping at base, ascending ; Ivs. deltoid, truncate 

 at base, petioles subconnate ; scales lanceolate, acute. Isl. St. Vincent, Fla. 1 2f. 



19 E. pubescens Muhl. Hairy; Ivs. distinct, sessile, ovate, acute, blunt-toothed; 

 hds. about 8-flwd. ; scales lanceolate, acute, short. Dry. N. H. to N. J., and Ky. 3 4f. 



20 E. reslnostim Torr. Viscid-resinous; leaves distinct, closely sessile, lin. -lanceo- 

 late, long-pointed ; hds. 10-15-flwd. ; scales obtuse, white-downy. Barrens, N. J. 2-3f. 



21 E. perfolia,tum L. Thoroughivwt. Boneset. Hairy; Ivs. lanceolate, each pail 

 united at base around the stem ; heads about 13-flowered, in a large, dense corymb ; 

 scales lance-oblong, acute. Low grounds : common. 3 4f. A powerful tonic. 



22 E. serotlnum MX. Soft-pubertilent ; Ivs. petiolate, lance-ovate, sharp-serrate, 3- 

 veined ; hds. 12-15-flwd. ; scales 911, similar, very downy, obtuse. Md., S. and W. 5f. 



23 E. ageratoides L. Smooth; Ivs. long-petiolate, ovate, acuminate, sharp-serr., 

 3-veined ; hds. 10-20-flwd., in a compound corymb ; scales oblong, obtuse. Woods. 3f. 



24 E. aromaticum L. Rough-downy; Ivs. petiolate, lance-ovate, acute, 3-veined, 

 blunt-serr. ; hds. 10-15-flwd., in small corymbs ; scales lance-linear. Low woods. 2f. 



25 E. iiicarimtum Walt. Diffusely branched ; leaves long-petioled, deltoid-ovate, 

 pointed, coarsely crenate-dentate ; hds. on slender ped., 15-20-flwd. ; scales lin.-subu- 

 late, 3-striatc ; lobes of the corolla pale purple. Damp soils, N. Car. to Fla. 8f. 



