21. E . aromaticum (Linn.): pulverulent-pubescent or somewhat glabrous;
stem simple or loosely corymbose at the summit; leaves opposite, on short
petioles, or sometimes almost sessile, ovate, subcordate, or ovate-oblong,
rather acute or obtuse, rarely acuminate, 3-nerved or tripli-nerved, of a
thickish and firm texture, mostly scabrous-pubescent, rather obtusely dentate-
serrate; corymbs loose, somewhat panieled; heads 8-20- (commonly 12-15-)
flowered; scales of the involucre 10-14, linear-lanceolate, nearly equal, pubescent,
with slightly scarious and obtuse tips; corolla narrowed below, cam-
panulate at the summit, rather exceeding the pappus; achenia glabrous.—
Linn.! spec. 2. p. 839 (fide herb.! &c syn. P lu k .! Sf Gronov.!) ; W illd .!
spec. 3. p. 1765 ; Michx.! Jl. 2. p. 100 ; Pursh! Jl. 2. p. 516 ; A it.! Kew.
(ed. 2.) 4. p. 508; E ll .! sk. 2. p. 304 ; Bigel. Jl. Bost. ed. 2. p. 298;
Darlingt. ! jl. Cest. p . 452; D C .p r o d r . 5. p. 175. E. cordatum, Walt.
Car. p. 199; DC. ! 1. c. (the smaller-leaved forms.) E. melissoides, W illd .!
1. c. p . 1754. (a dwarf form ; heads about 8-flowered !) E. ceanothifolium,
Muhl. in Willd. ! spec. 1. c. (fide herb. W illd .; but the heads at least 12-
flowered, instead of 5-flowered); Ell. ! 1. c. (leaves small, petioled ; heads
8-10-flowered !); DC. ! 1. c. (leaves larger, acuminate, nearly glabrous !)
E. cordiforme & E. Fraseri, Poir. suppl. fide DC. (Eupatorium, Lam. ill.
t. 672.)
Dry woods and usually in barren soil, from Massachusetts near the coast!
to Florida! Alabama! and Louisiana ! Aug.-Sept.—This species exhibits
considerable variety in the form of the leaves, the length of the petioles, &c.
It bears much resemblance to the preceding, and occasionally approaches it
perhaps too closely ; but it is a lower and more slender plant, with smaller
and much firmer leaves on shorter petioles, fewer heads, but usually larger
flowers. The root is perennial.
22. E . ageratifolium (DC.) : shrubby, glabrous; the branches terete;
leaves opposite, petioled, broadly ovate, somewhat truncate at the base, attenuate
at the apex, obtuse, coarsely toothed, 3-nerved, not glandular; corymbs
terminal, trichotomous; pedicels somewhat viscous, scarcely pubescent
; heads about 10-flowered; scales of the involucre in a double series,
linear, rather acute, slightly ciliate at the apex, at length spreading; pappus
as long as the corolla ; achenia puberulent, the angles somewhat scabrous.
DC.! prodr. 5. p. 173.
[). Texense: branches, pedicels, petioles, and usually the veins of the
leaves minutely puberulent; heads about 12-flowered.
Limestone rocks, Sabina’s Creek (Camancheries) Texas, Dr. Riddell! (/?.)
—Shrub 6 feet high; the branches terete; the branchlets slightly angled.
Leaves in shape and texture wholly resembling many forms of E. aromaticum
; the corymbs also similar. Involucre about half the length of the
flowers, glabrous or nearly so ; the exterior scales 4-6, linear, rather acute,
one of them shorter and bracteolate; the inner about the same number,
rather broader, with narrow scarious margins, somewhat obtuse, scarcely
ciliate at the apex. Corolla “ white, slightly tinged with rose-color” (Riddell),
dilated upwards, scarcely longer than the pappus; the teeth short,
glabrous. Achenia puberulent, and appearing somewhat viscous.—The
Texan plant accords almost exactly with De la Sagra’s specimens from
Cuba, except that the scales of the involucre are less ciliate and more
obtuse.
23. E . incarnatum (Walt.): stem pulverulent-pubescent, branching; leaves
opposite, on slender petioles, membranaceous, deltoid, truncate or subcordate
(rarely only obtuse) at the base, tapering at the summit or acuminate,
obtusely and coarsely toothed, 3-nerved at the base, slightly pubescent; corymb
small, often panieled ; heads 20-flowered ; scales of the involucre 15-
20, nearly equal, (a few of the outermost shorter,) in a somewhat double
series, subulate-linear, acute, 2-nerved, slightly pubescent; pappus about the
length of the infundibuliform-tubular corolla; achenia glabrous.— Walt. Car.
p. 200 ; Ell. ! sk. 2. p. 306 ; DC. ! prodr. 5. p. 175.
Rich soil, S. Carolina ! to Florida! Louisiana! and Texas ! Sept.-Nov.
—Stem 2-3 feet high, at length decumbent and producing numerous branches.
Leaves 1-2 inches long, the lateral nerves pedately branched from the
base ; petioles rather shorter than the lamina. Heads nearly as large as in
E. ageratoides. Lobes of the corolla light purple, very short, ovate, obtuse,
glabrous. Branches of the slightly exserted style very obtuse.—Considerably
resembles Conoclinium coelestinum.
24. E. occidental (Hook.): nearly glabrous ; stem (or branches) slender;
leaves alternate (rarely opposite), on short petioles, ovate, acute or acuminate,
tripli-nerved, coarsely and sparingly serrate ; the uppermost narrow,
entire ; corymbs small and mostly simple, panieled; heads 15-25-flowered;
scales of the involuere linear, acute, nearly equal, in a single series ; corolla
infundibuliform ; achenia slender, glabrous.—Hook.! Jl. Bor.-Am. 1 . p. 305 ;
DC. ! prodr. 5. p. 176. E. Oreganum, Nutt, in trans. Amer. phil. soc. (n.
ser.) 7. p. 286.
Interior of Oregon, in stony places, Douglas! Nuttall !—Plant 6-12 inches
high. Flowers white or pale rose-color. Styles much exserted. Leaves
about an inch long.
Eupatorium luteim of Rafinesque doubtless belongs to some other genus; but it
will never be identified by the following character: “ E. lutewrn (yellow Eupatory) ;
leaves linear, cuneiform, acute, entire, smooth; flowers paniculated; calyx 4-flow-
ered.—In New Jersey.” Itaf. in med. repos, {hex. 2.) 5. p. 361.—-E. crassifolium and
E. vidlaceum are Rafinesquian species of the Florula Ludoviciana: the latter may
be E. incarnatum, Walt.
Eupatorium Perrinmamim of Sprengel, and of Schlechtendal (in Ldnnaa, 11. p.
5), which came from the "West Indies, and not from South America as Sprengel
states, is a genuine species of Yemonia, (fide. sp. authen. in herb. Torr. \ : Prof.
Schlechtendal must have overlooked the double pappus.
17. MIKANIA. Willd. spec. 3. p. 1452; DC. prodr. 5. p. 187.
Heads mostly 4-flowered. Receptacle naked, narrow. Scales of the involucre
4 or 5. Corolla dilated or campanulate at the summit, 5-toothed.
Anthers partly exserted. (Style with a cylindrical glabrous bulb at the
base; the branches exserted, filiform, scarcely obtuse.) Achenia angled.
Pappus in a single series, capillary, scabrous.—Shrubby or herbaceous
mostly climbing plants (chiefly tropical and American), with opposite commonly
cordate leaves. Heads corymbose, panieled, or spicate. Flowers
whitish.
oles, cordate, acuminate, repandly.crenate or angularly toothed towards the
base, membranaceous, slightly scabrous or pubescent, or glabrous ; corymbs
paniculate, clustered ; scales of the involucre lanceolate ; achenia minutely
glandular.— Willd. spec. 3. p. 1743 ; Pursh! Jl. 2. p . 517 ; Ell. sk. 2. p.
292; Bigel. Jl. Bost. ed. 3. p. 314 ; Darlingt. jl. Cest. p. 454. Eupatorium
scandens, L in n .; Michx. ! jl. 2. p. 97; Jacq. ic. rar. t. 169.
/3. pubescens: stem and leaves more or less pubescent.—M. pubescens,
Muhl. cat. p . 71; Nutt. gen. 2. p . 136 ; Ell. 1. c .; DC. ! 1. c., 8f 7. (mant.)
p. 271. Eupatorium scandens, L in n .! (as to specimen in his herb.); Walt.
Car. p. 198. '