Class XIX. Order I. 189 



repand-toothed, acuminate, the lobes divaricate,, un- 

 equal ; flowers corymbed. Willd. 



Syn. EUPATOKIUM SCANDENS. Mich. 



Stem twining;, smooth. Leaves opposite, on long petioles, 

 glabrous, somewhat triangular or halberd shaped, their lower 

 half toothed, the upper tapering into a long, even, and very 

 acute point. Branches opposite, axillary, bearing small, ter- 

 minal, corymbs. Flowers purplish white. Calyx with aboul 

 four leaves, and as many florets. Wet places. August, Sep- 

 tember. Perennial. 



228. EUPATORIUM. 

 EUPATORIUM SESSILIFOHUM. L. Sessile leaved Eupatorium. 



Leaves sessile, clasping, distinct, ovate-lanceo- 

 late, rounded at base, serrate, smooth ; stem smooth. 

 Willd. 



An erect plant with corymbed flowers, as are all the subse- 

 quent species. Stem slender, smooth. Leaves opposite, close- 

 ly sessile, circular at base, tapering to a very long, acute point, 

 furnished with small teeth or serratures, and paler underneath. 

 Peduncles downy. Flowers white, in a terminal corymb 

 Calyx containing about five florets. Found in the woods at 

 Roxbury. August. Perennial. 



EUPATORIUM YERBEN^EFOLIUM. ,Mlch. Vervain leaved En- 



patorinm. 



Leaves sessile, lance-oval, acute, obtusely cut- 

 toothed, pubescent ; calyxes pubescent, awnless, 

 five flowered. Mich. 



The name is taken from the resemblance of the leaves to the 

 upper ones of the officinal Vervain. Stem round, downy at top. 

 Leaves opposite, closely sessile, pointing upward, rounded at 



