GENUS 4. 
4. Eupatorium purpireum L. Joe-Pye or 
or Purple Boneset. 
Eupatorium purpureum L. Sp. Pl. 838. 1753. 
E. falcatum Michx. Fl. Bor. Am. 2: 99. 1803. 
Eupatorium purpureum var. angustifolium T. & G. Fl. 
N. A. 2: 82. 1841. 
Eupatorium purpureum falcatum Britton, Mem. Torr. 
Club 5: 312. 1894. 
Glabrous or sparingly pubescent, simple or 
branched at the summit, 3°-10° high. Stem green 
or purple, terete or striate, usually smooth; leaves 
thin, verticillate in 3’s-6’s, ovate, oval, ovate-lan- 
ceolate or narrowly lanceolate, petioled, acumi- 
nate, serrate, 4-12’ long, 6-3’ wide, glabrous or 
slightly pubescent along the veins on the lower 
surface; inflorescence usually elongated; heads 
very numerous; involucre cylindric, its bracts 
pink, oblong, obtuse, imbricated in 4 or 5 series, 
the outer shorter; flowers pink or purple, occa- 
sionally white. 
In moist soil, New Brunswick to Manitoba, Flor- 
ida and Texas. Kidney-root. Skunk-weed. Indian 
gravel-root. Marsh-milk weed. Nigger-weed. Quill- 
wort. Motherwort. King- or queen-of-the-meadow. 
Aug.-Sept. 
Eupatorium trifoliatum L. has the teeth of the 
leaves bluntly apiculate, but otherwise closely re- 
sembles E. purpureum and may not be specifically 
distinct. 
THISTLE FAMILY. 
Trumpet-weed. Gravel-root. 
Fig. 4155. 
357 
Tall 
5. Eupatorium serétinum Michx. Late- 
flowering Thoroughwort. Fig. 4156. 
E. serotinum Michx. FI. Bor. Am. 2: 100. 
1803. 
Much branched, finely and densely pubescent, 
M Zz 
6. Eupatorium leucélepis T. & G. White- 
bracted Thoroughwort. Justice-weed. 
Fig. 4157. 
E. leucolepis T. & G. Fl. N. A. 2: 84. 1841. 
Slender, puberulent, branched above, 1°-2° 
high. Leaves opposite, sessile, linear, oblong 
or oblong-lanceolate, glaucous green, rough on 
both sides, thick, blunt-pointed, sparingly ser- 
rate, or the upper entire, 1’-3’ long, 2”-5” wide, 
obscurely 3-nerved and narrowed at the base; 
inflorescence cymose-paniculate; heads 3’— 
high, about 5-flowered; bracts of the narrow 
involucre imbricated in about 3 series, white, 
lanceolate, acute, densely canescent, the outer 
shorter; flowers white. 
In moist places, Massachusetts and Long Island 
to Florida, Georgia and Louisiana. Aug.—Sept. 
or glabrate below, 4°-8° high. Leaves all slen- 
der-petioled, lanceolate or ovate-lanceolate, acu- 
minate, sharply serrate, 3-6’ long, 4-2’ wide, 
5-nerved at the base, the lower opposite, the 
upper alternate; heads very numerous, the in- 
florescence broadly cymose; heads 7-15-flow- 
ered, 2-3” high; involucre campanulate, its 
bracts pubescent, linear-oblong, obtuse or trun- 
cate, imbricated in 2 or 3 series, the outer 
shorter; flowers white. 
In moist soil, Deiaware to Florida, Minnesota, 
Sept._Nov. 
Iowa, Kansas and Texas. 
