30 4 COMPO S IT.E. [Eupatorium, 



Trib. III. Vernoniace^. Less, 



Subtrib. Vernonie^. Capitula multifiora et homogama mit tmijlora^ involucro imhricato 

 et nmUiseriaU, Styli rami acuminatu Involucrum teres. Cor, plerumque purpureo- 

 violacecB ant albce. Less, 



18. VERNONIA. Schreb, 



Capitulum inultiflorum. Eachis ebracteolata. Pappus pluriserialis, serie exteriori e 

 setis vel paleis distinctis et crebris constante. — Arbores, Frutices, seu Herbte, plerumque 

 AmericancB, quarum in parte occidentali AmericcB Septentrio7ial is ne una quidem^ Meridionalis 

 nojinisi 0,07 occur nmt^ facie poly morphce ; ramis foliisque alternis rarissime oppositis ; cap- 

 itulis violaceo-purpureis aut albis, rarissime luteis. Less, 



1. V,pr(Balta; altissima, foliis crebris lanceolatis serrulatis scabris, corynibo fastigiato, 

 calycinis squamis acutis vel apice filiformibus. Willd, Sp. PL v, B.p, 1633. Mich, Am. v, 2, 

 p, 95, Pursh, FL Am, v. 2. p. 511. Elliott, Carol, v. 2, p. 267.— Serratula prjealta. Linn, 

 —V. Noveboracensis. Willd, Sp, PL v. 3. p. 1632. Mich, Am, L c. Pursh, L c, Elliotty 

 CaroL v, 2, p. 269. BigeL FL Bost, ed, 2. p, 294.— Serratula Noveboracensis. Linn, Hort, 

 ' Cliff,~~DilL Hort Elth. L 263 et 264. 



Hab. Canada. Purs7i,—l never had been able to detect any distinguishing character between Kpraalta 

 and V, Noveboracensis, and was therefore very happy to find my opinion of their identity confirmed by so 

 eminent an observer as Lessing. 



Trib. IV. EuPATORiACE.?:. Less. 

 Subtrib. I. Eupatorie.e, Capitida homogama $ . Pappus e pilis vel setis angus- 



tissimis constat. Less. 



19. EUPATORIUM. Zinn. 



Capitulum pauci-seu niulti-nec4-florum. Pappus uniserialis, non plumosus. Cor, limbo 

 a tubo non distincto. Involucrum pauci-multiseriale, Receptaculum nudum. Achenium 

 4-5-quetrum.— Arbores vel Frutices aut Herbae, in Europa et Asia sed longe plerceque in 

 America crescentes, plerumque erecti, ramis foliisque oppositis sive verticillatis, rarius alternis; 

 capitulis violaceis vel albis, corymhosis seu corymhoso-paniculatis. Less, 



1. E, rotundifolium ; pubescenti-pilosum subscabrum, involucro subsexfloro, foliis sessili- 

 bus subrotundo-cordatis obtusis venosis crenato-serratis, squamis calycinis acuminatis, coroUis 

 B\hxs,~Linn, Sp. PL p, 1173. Mich, Am. v. 2. p. 98. Elliott, CaroL v. 2, p. 300. Pursh, 

 FL Am. V, 2./?. 514. 



Hab. Canada. Fursh, Mr. Goldie.~^TU involucre, achenia, and corolla abonnd in minute, yellow, 

 glandular exudations Decoctions of this plant are employed in the Southern United States, (where this 

 species IS very abundant) as a febrifuge. 



2. Kpurpureum; involucro 12-13-floro, foliis petiolatis 3-5-iiatimve verticillatis ovato- 

 lanceolatis acummatis grosse serratis scabriusculis subtus pubescentibus, caule fistuloso, 

 fionbus purpureis.-M/c^. Am, v. 2. p, 99. Pursh, FL Am. v. 2. p. 515. Elliott, CaroL v. 

 2. p. 307. BigeL FL Bost, ed 2. p. 297. 



Hab. From Lake Huron, throughout Canada, to the Saskatchawan, abundant. 



