296 Class XIX. Order I. 



EUPATORIUM VERBENJEFOLIUM. Mich. Vervain leaved Eu- 



patorium. 



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 

 base, acute, but not acuminate like the last, the sides cut into 

 very large, and rather blunt teeth. Corymb compound, ter- 

 minal, pubescent. Flowers white. Grows at Cambridgeport 

 and elsewhere, in low ground. August, September. Peren- 

 nial. 



EUPATORIUM PUBESCENS. Willd. Hairy Eupatorium. 



Leaves sessile, distinct, rough, veiny, the lower ones 

 doubly serrate, the upper ones subserrate, stem pan- 

 icled, pubescent, the branches fastigiate. Willd. 



Stem hairy, two feet high. Leaves opposite, sessile, ovate, 

 toothed, hairy. Upper leaves nearly entire, with a tooth or two 

 at base, alternate ? Branches of the corymb alternate ? Calyx 

 cylindrical, hairy ; florets about five. In a swamp at West Cam- 

 bridge. July. 



As it agrees prettywell with the character above quoted from 

 Willdenow, I have assigned it to his species pubescens. The 

 upper leaves in my specimens are all alternate. Should this 

 character be found constant, it may deserve the name of alterni- 

 folium. 

 * EUPATORIUM OVATUM. Ovate Eupatorium. 



E. hirsutum, scabrum; foliis oppositis, sessilibus, 

 ovatis, obtuse dentatis ; corymbo fastigiato ; calycibus 

 sub-octqfloris. 



Hairy, rough ; leaves opposite, sessile, ovate, ob- 

 tusely toothed : corymb fastigiate, calyxes about eight 

 flowered. 



