Trib. III.. Vernoniace.®. Less.
Subtrib. V e r n o n ie® . Capitula multiflora et homogama aut uniflora, involucro imbricato
et multiseriali. Styli rami acuminati. Involucrum teres. ' Cor. plerumque purpureo-
violaceee aut alba. Less.
18. VERNONIA. Schreb.
Capitulum multiflorum. Rachis ebracteolata. Pappus pluriserialis, serie exteriori e
setis vel paleis distinctis et crebris constante.—Arbores, Frutices, seu Herbse, plerumque
Americanos. quarum in parte occidentali America Septentrionalis ne una quidem, Meridionalis
nonnisi 0,07 occurrunt, facie polymorpha ; ramisfoliisque alternis rarissime oppositis ; cap-
itulis violaceo-purpureis aut albis, rarissime luteis. Less.
1. V.p ra a lta ; altissima, foliis crebris lanceolatis serrulatis scabris, corymbo fastigiato,
calycinis squamis acutis vel apice filiformibus. Willd. Sp. PI. v. S.p. 1633.Mich. Am. v. 2.
p. 95. Pursh, FI. Am. v. 2. p . 511. Elliott, Carol, v. 2. p. 267.—Serratula praealta. Linn.
—V. Noveboracensis. Willd. Sp. PI. v. 3. p. 1632. Mich. Am. 1. c. Pursh, l. c. Elliott,
Carol, v. 2. p . 269. Bigel. El. Bost. ed. 2. p. 294.—Serratula Noveboracensis. Linn. Hort.
Cliff.—Dill. Hort. Elth. t. 263 et 264.
Hab. Canada. Pursh.—I never had been able to detect any distinguishing character between V. praalta
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. E upatoriaceje. Less.
Subtrib. I. E upatorie®. Capitula homogama ? . Pappus e pilis vel setis angus-
tissimis constat. Less.
19. EUPATORIUM. Linn.
Capitulum pauci-seu multi-nec 4-florum. Pappus uniserialis, non plumosus. Cor. limbo
a tubo non distincto. Involucrum pauci-multiseriale. Receptaculum nudum. Achenium
4-5-quetrum.—Arbores vel Frutices aut Herbse, in Europa et Asia sed longe pleraque in
America crescehtes, plerumque erecti, ramis foliisque oppositis sive verticillatis, rarius alternis;
capitulis violaceis vel albis, corymbosis seu corymboso-paniculatis. Less.
1. E. rotundifolium; pubescenti-pilosum subscabrum, involucro subsexfloro, foliis sessili-
bus subrotundo-cordatis obtusis venosis crenato-serratis, squamis calycinis acuminatis, corollis
albis.—Linn. Sp. PI. p . 1173. Mich. Am. v. 2. p . 98. Elliott, Carol, v. 2. p. 300. Pursh,
FI. Am. v. 2. p. 514.
Hab. Canada. Pursh. Mr. Goldie.—The involucre, achenia, and corolla abound 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. E. purpureum ; involucrq 12-13-floro, foliis petiolatis 3-5-natimve verticillatis ovato-
lanceolatis acuminatis grosse serratis scabriusculis subtus pubescentibus, caule fistuloso,
floribus purpureis.—Mich. Am. v. 2. p . 99. Pursh, FI. Am., v. 2. p. 515. Elliott, Carol, v.
2. p . 307. Bigel. FI. Bost. ed 2. p. 297.
Hab. From Lake Huron, throughout Canada, to the Saskatchawan, abundant.
3. E. maculatum; foliis petiolatis quaternis quinisve ovato-lanceolatis inaequaliter serratis
subtus pubescentibus, caule solido sulcato.—Linn.— Willd. Sp. PI. v. S.p. 1760. Pursh, FI.
Am. v. 2. p. 514. Elliott, Carol, v. 2. p. 308.
-Hab. Canada. Pursh.-—I have received nothing under the name of E. maculatum, which was not at
once referable to E. purpureum, to which the E.'verticillatum andpunctatum of Willd. and the E. ternifolium,
Ell. (E. trifoliatum, Willd.) may probably be with safety added.
4. E. perfoliatum; involucro suboctofloro, foliis connato-perfoliatis oblongo-acuminatis
crenato-serratis rugosis subtus pubescentibus, caule villoso, floribus parvis albis*—Linn.—
Willd. Sp. PI. v. 3. p. 1761. Pursh, FI. Am. v. 2. p . 516. Elliott» Carol, v. 2. p. 302. Bigel.
% FI. Bost. ed. 2. v. 2. p. 297. Med. Bot. v. 1. t. 2.—E. connatum. Mich. Am. v. 2. p . 99.
Hab. Throughout Canada.—A well-known bitter, and useful tonic.
5. E. occidentale ; glabriusculum, foliis alternis breve petiolatis ovatis acuminatis grosse
inaequaliter serratis apice integerrimis summis lanceolatis integerrimis, floribus paniculato-
corymbosis, involucri pluriflori foliolis linearibus acutis laxis, acheniis linearibus angulatis,
caule striato.
Hab. On the low hills between the north and south branch of Lewis and Clarke's River, in stony places.
Douglas.—“ Two to four feet high. Flowers white.”
6. E. ageraloides; involucri subdecemflori foliolis uniserialibus aequalibus linearibus,
foliis longe petiolatis cordato-ovatis acuminatis trinervibus grosse serratis, corymbo divaricato
multifloro, caule glaberrimo, floribus albis.-—Linn.—Pursh, FI. Am. v. 2. p. 516. Elliott,
Carol, v. 2. p. 303. Bigel. FI. Bost. ed. 2. p. 298.—E. urticaefolium. Mich. Am. v. 2. p.
100.— Ageratum altissimum. Willd. (according to Pursh.)
Hab. Canada. Michaux. About Quebec. Mrs. Percival.—This appears to be a rare species in Canada,
whence I have only received it from Mrs. Percival. In the single row of scales to the involucre, it assimilates
with the following genus.
19. MIKANIA. Willd.
Capitulum 4-florum. Pappus uniserialis,-non plumosus. Cor. limbo campanulato. Involucrum
4-5-phyllum, uniseriale. Receptaculum nudum.— Frutices vel Herbse Americani,
plerumque scandentes; foliis oppositis; capitulis corymboso-paniculatis. Less.
1. M. scandens; glaberrima, scandens, foliis cordatis acuminatis subrepando-dentatis
lobis divaricatis insequalibus, cymis pedunculatis.—-Willd. Sp. PI. v. 3. p . 1743. Pursh, FI.
Am. v. 2. p. 517. Elliott, Carol, v. 2. p. 292. Bigel. FI. Bost. ed. 2. p. 295.—Eupatorium
scandens. Linn.—Mich. Am. v. 2. p. 97. Jacq. Ic. Rar. v. 1 .1. 169.
Hab. Canada, Michaux; probably in the extreme southern parts. I have never received specimens from
the British territories; but it seems frequent in the adjoining New England States.—Lessing, who, however,
has kept up the Genus Mikania in his Synopsis, says it should be joined to Eupatorium.
20. LIATRIS. Schreb. \
Pappus pluriserialis, plumosus. Cor. limbo a tubo non distincto. Involucrum multiseri-
ale. Receptaculum nudum.— Herbse Boreali-Americana,perennes, radice fibrosa vel tuber-
osa; foliis alternis, integerrimis, sape angustis, glanduloso-punctatis; capitulis multifloris,
spicatis vel corymbosis, corymbis imbricatis. Less.
VOL. I. 2 Q