358 COMPOSITAE. Vor. III. 
7. Eupatorium album L. White Thor- 
oughwort. Fig. 4158. 
Eupatorium album L. Mant. 111. 1767. 
Eupatorium glandulosum Michx. Fl. Bor. Am. 2: 
98. 1803. 
Eupatorium album subvenosum A. Gray, Syn. Fl. 
t7 Part 2,98. 1884. 
Pubescent with spreading hairs, branched 
above, 1°-3° high. Leaves opposite, sessile or 
nearly so, oblong or oblong-lanceolate, obtuse, 
obtusish or the upper acute at the apex, nar- 
rowed at the base, coarsely or rather finely ser- 
rate, 1-4’ long, #’-1’ wide, rather thick, mi- 
’ nutely scabrous above, more or less pubescent 
beneath ; inflorescence cymose-paniculate ; heads 
numerous, 4-5” long, 5-7-flowered; involucre 
narrow, its bracts bright white, linear, cuspi- 
date, imbricated in 3-4 series, the outer short 
and usually pubescent, the inner much longer, 
glabrous and shining; flowers white. 
In sandy soil, Long Island to Florida, Ten- 
nessee, Arkansas and Louisiana. Ascends to 3000 
ft. in Virginia. Aug.—Sept. 
« Whi 
DS FAN 
L. Hyssop- Ny 
leaved Thoroughwort. Fig. 4159. aH 
Eupatorium hyssopifolium L. Sp. Pl. 836. 1753. 
E, linearifolium Walt. Fl. Car. 199. 1788. é 
Roughish-puberulent, densely corymbosely 
branched above, bushy, 1°-2° high. Leaves linear, 
opposite, and fascicled in the axils of the stem, 
or on short axillary branches, entire or very - 
nearly so, 3’-2’ long, 1-2” wide, firm, obtuse at 
the apex, narrowed at the base; inflorescence 
densely cymose-paniculate; heads 3”-4” long, 
about 5-flowered; involucre campanulate, its bracts | 
linear or linear-oblong, obtuse or truncate, some- 
time apiculate, puberulent, imbricated in about 3 
series, the outer shorter; flowers white. 
In dry fields, Massachusetts to Florida and Texas. 
Justice-weed. Leaf-margins usually revolute. Aug.— 
Sept. A plant from the coast of Maryland with 
very narrow leaves, closely approaches Eupatorium 
lecheaefolium Greene, from Florida. 
Ni) 
z : 
g- Eupatorium Torreyanum Short. Tor- 
rey's Thoroughwort. Fig. 4160. 
Eupatorium Torreyanum Short, 2nd Suppl. Cat. Pl. 
Ky. 5. 1836. 
Eupatorium hyssopifolium var. laciniatum A, Gray, 
Syn. Fl. 1: Part 2, 98. 1884. 
Rootstock tuberous-thickened; stem usually 
densely puberulent, mostly branched above, 13°— 
3° high. Leaves opposite, or sometimes in 3’s, 
commonly with short leafy branches in their 
axils, often drooping, lanceolate, acute at the 
apex, narrowed at the base, sessile, 1’-3’ long, 
2”-6” wide, usually distinctly 3-nerved, distantly 
serrate, the upper and those of the branches 
much smaller, linear, entire; inflorescence mostly 
loose; heads about 3” high, generally 5-flow- 
ered; bracts of the campanulate involucre linear- 
oblong, obtuse, pubescent, or puberulent, imbri- 
cated in about 3 series, the outer shorter; flow- 
ers white. 
In dry soil, Pennsylvania to North Carolina, 
Kentucky, Florida and Texas. July—Sept. 
