314 LXXV. COMPOSIT.&. oo 
series; receptacle naked ; corolla 5-toothed, enlarged at the throat; 
branches of the style much exserted ; achenia 5-angled, crowned with 
a cup-shaped pappus of 5, obtuse, horny scales—% Aquatic, glabrous, 
simple, with 1\—3 terminal heads. Lvs. verticillate. Els. purple. 
S. verTicitLata. Cass. (Sparganophorus. Micha.) 
In shallow water, N. J. to Flor. Stem decumbent at base, 1—2f high. 
Leaves in numerous whorls of about 6, linear-setaceous, entire, 1’ in length. 
Head commonly solitary, at top of the stem. Jl. Sept. 
4. EUPATORIUM. 
Dedicated to Eupater, king of Pontus, who first used the plant in medicine. 
Flowers all tubular; involucre imbricate, oblong; style much ex- 
serted, deeply cleft ; anthers included ; receptacle naked, flat ; pappus 
simple, scabrous ; achenia 5-angled—% Herbs, with opposite or vert- 
cillate leaves. Hds. corymbose. Els. of the cyanac serves, that is, white, 
blue, red, §ec.. never yellow. 
* Leaves verticilate. Flowers purple.f 
1. E. ristunésum. Barratt. (E. purpureum. Willd. in part. E. macu~ 
latum. Linn. in part. E. purpureum. y. angustifolium. T. g& G.) Trum- 
pet-weed.—St. fistulous, glabrous, glaucous-purple, striate or fluted; ls. 
in about 12 whorls of 6s, largest in the middle of the stem, rather finely glan- 
dular-serrate ; midvein and veinilets livid purple ; corymb globose, with whorled 
eduncles.—Thickets, U. S. and Can., very abundant in the Western States! 
eight 6—10f, hollow its whole length. Leaves, including the 1’ petiole, 8’ by 
2’. Corymb often 1f diam. Flowers purple. The glaucous hue and suffused 
redness of this majestic plant are most conspicuous in flowering-time, Jt does 
not appear to possess the acrid properties of E. maculatum. July—Sept. 
2. E. macutatum. (E. purpureum, . Darl.) Spotted Ewpatorium. 
St. solid, striate, hispid or pubescent, greenish and purple, with numerous 
glands and purple lines; the glands on the stem and leaves give out an acrid 
effuvium in flowering-time ; /vs. tripli-veined, 3—5 in a whorl—Low grounds, 
U.S. and Can. Stem 4—6f high. Leaves petiolate, 6—7’ by 3—4’, strongly 
serrate. Flowers purple. July—Sept. % 
B. urticefolium. Barratt. Height 4—5f; st. solid, slender; Jus. thin, much 
longer than the usual form of E. maculatum. 
_8. E. purpurevum. Linn. not of DC. Willd. nor Ph. (E. verticillatum. Willd.) 
St. solid, glabrous, green, sometimes purplish, with a purple band at the 
joints about 1’ broad; dvs. feather-veined, in whorls of 3,4 and 5, smooth above, 
with a soft pubescence beneath along the midvein and veinlets, coarsely serrate, 
—Dry woods or meadows, common, U, 8. and Can. Stem 6f high. Leaves 
thin and soft, J—12’ Spann the 1’ petiole) by 3—4’.. Corymb lax, pale pur- 
ple, varying to whitish. Aug. Sept. 
B. album. Barratt. (E. trifoliatum. Darl.) Fs. dull white; dvs. 5in a whorl, 
large and distant.—It occurs also witn 4 leaves in a whorl—a tall variety, 
upper leaves subfalcate ; also with 3 leaves in a whorl—tall and slender. 
4. E. TerNIFouiuM. El. (in part.) 
St. solid, somewhat hispid and glandular, greenish, with purple dots and 
lines; lvs. mostly 3 in a whorl, the upper and last whorls smooth and finely ser- 
rate. 
B. vesiculosum. Barratt. St. striate, purplish, solid, 2—3f high—Abundant 
in meadows and pastures. A handsome variety, with a profusion of purple 
flowers in a large, spreading corymb. The leaves present a vesicular appear- 
ance in a remarkable degree on their upper surface. 
** Leaves opposite. Heads 3—5-flowered. . 
5. E. uyssopirouium. Narrow-leaved Eupatorium. 
Lws. opposite (the upper ones alternate), often verticillate, linear-lanceo- 
* This section according to Dr. Barratt. See preface. 
