•nrprl SYNGENESIA 451 



• h ami half wide, sessile, obtuse at base, m >re or less ovate, tapering gradually 

 tke apex, and mostly erect, coarsely and unequally incised-serrate (occa- 

 rioaftlly sub-lobed near the base), the serratures or segments rather obtuse,— the 

 9,U1 r leaves, especially on the branches, smaller, and mostly entire. Heads of 

 flowerl somewhat clustered, corymbose ; involucre very pubescent, the inner leaf. 

 Ms lance-oblong, rather acute, scarcely acuminate, scariouson the margin. Flo- 

 uts white. Style, &x. resembling the preceding. 



Hub Low swampy grounds ; borders of thickets : frequent. Fl. Aug. Fr. Sept. 

 Obs This is somewhat variable in the size and form of the leaves,— the lower 

 nes being sometimes broad ish-o vale and rather obtuse. Collected in 1827, by D. 

 Townsbnd, Esq. 



3 E. SK8SILIFOLTUM, L. Leaves long-lanceolate, or ovate-lanceolate, 

 acuminate, sharply serrate, smooth, punctate beneath, rounded or sub- 

 cordate at base, sessile, distinct ; involucre 5-flowered, the leaflets ob- 

 tuse, punctate. Beck, Bot. p. 197. 

 Sf.ssilb-lkaved Eupatorium. 



Root perennial. Stem 2 to 3 feet high, slender, corymbose at summit, striate 

 smooth the branches and pedicels pubescent. Leaves 2 or 3 to 6 inches long, and 

 half an inch to an inch and half wide, tapering to a long slender acute point, 

 sharplv and nearly equally serrate, smooth, paler and minutely punctate beneath t 

 sessile, the base very obtuse, often subcordate, and apparently slightly amplex- 

 icaul. Heads of flowers cluster* d, corymbose; involucres pubescent, the leaflets 

 )ance'ObloD2, obtuse, punctate with numerous brown dots, scarious on the margin. 

 Florets white. 

 Hob. Borders of woodlands, and thickets : frequent. FL August. Fr. Sept. 



# * 



Involucre move than 5-/loivered. 



4. E. prrtoltatumt, L. Leaves connate-perfoliate, lance-oblong, ae- 

 uminate, crcnate-serrate, rugose, very pubescent beneath. Beck, 



Bot. p. 198. 



E. connatum. Mr. Am. 2. p. 99. [an Sage. 



Perfoliate Eupatorium. Vulgo — Thorough-stem. Bone-set. Indi- 

 Root perennial. Stern 2 to 4 feet high, striate, hirsutely pubescent, corymbose 

 at summit, the branches whitish and very pubescent. Leaves 4 to 6 or 8 inches 

 long, and I to 2 inches wide, opposite, and completely united at base, or sometime* 

 contracted at base and scarcely connate, (rarely ternate and connate), tapering to 

 a slender point, obtusely and nearly equally serrate, rugose and very pubescent, 

 especially on the under side, sprinkled with minute resinous particles. Heads of 

 flowers clustered, in large corymbs ; involucres about 10-flowcred, pubescent, the 

 leaflets lance-linear, rather acute. Florets white. Anthers dark brown. 



Hob. Low, swampy grounds : common. Fl. July— August. Fr. September. 



Obs- This species Is generally well known for its valuable medicinal proper- 

 ties—being either tonic, cathartic, or emetic, according to the dose, or mode of 

 exhibition. I have employed it extensively, and with much satisfaction,— especi- 

 ally as a tonic. 



5. E. aoeratoibes, L. Stem smooth ; leaves broad-ovate, acumin- 

 ate, coarsely and unequally serrate, thin and smoothish, on long peti- 

 oles; involucre simple, smoothish. Beck, Bot. p. 198. 



