516 



SYNGENESIA ^GUALis. Eupatoriunl. 



On the banks of rivers and in swamps ; frequent : New 

 York to Can^lina. v. v. Frnm foui- to six feet high ; 

 flowers purple. It differs from No. IS in its stem, 

 broader and smoother leaves, and white calyces ; from 

 No. 19 in its stem and smooth leaves. 

 perfoliatum. 23. E. foliis connato- perfoliatis oblongis sursnm angustatis 

 sen\:tis nurci^is subtus tomentosis, caule villoso. — 

 Wilkl sp.'pi.S. p. 1761. 

 E. conjiatum. Mhh.fl. amer. 2. p. 99. 

 Icon. Pluk. elm t.87.f-6. 



In low meadows and about springs : Canada to Florida, 

 U . Aug. — Oct V. V. From two to three feet high j 

 flowers while. The whole plant is exceedingly bitter, 

 and has been used for ages past b' the natives and in- 

 habitants in intermitting fevers. It is generally known 

 by the name of Thonniiihwnrt or Bone-sei. I have 

 stated a case of its efHcaey in those diseases in a letter 

 to William Ro)Ston, Esq who inserted it in the Me- 

 dical and Physical Journal, In which ! stated the 

 benefits derived from this plant, by myself and others 

 during my stay in the neighbourhood of lake Ontario, 

 when boih the influenza and lake fever (similar to the 

 yellow fever) were raging among the inhabitants. It 

 is generally used as a decoction, or, which I consider 

 the more eflectual way, as an infusion in gin or rum. 

 coslesiinwn. 24. E. foliis petiolalis covdato-ovatis obtusinsculis tripliner- 

 vibus obtuse serratis, Iloribixs corymbosis, Willd. sp. 

 pi. 3. p. 1/04. 

 Icon. DHL elth.t. WA.f. \5g. 



In mountain- woods of Virginia to Carolina, ")/ , Aug. 

 — Oct. V. V. Flowers large, beautiful blue. 

 aromaliciim. 25. E. foliis petiolatis ovatis acutis trinervibus obtuse-serratis 

 glabris, caule superne paniculato, fioribus corymbosis, 

 calycibus simplicibus. IFilld. sp. pi. 3. p. IJQS. 

 Icon, Pluk aim. t. 88 / 3. 



In woods and on the banks of rivers : Pens3'lvania to 

 Florida. % Aug.— Oct. v. v. Flowers large, clear 

 white, sweet-scented. 

 ageratoides. 26, E. foliis petiolatis ovatis acuminatis trinervibus inaequaliter 

 grosse serratis glabris, corymbo multittoro divaricato, 

 calycilius subsiraplicibus. IFilld sp.pl. 3. p. 1765. 

 E. urticaetolium. Mkh.fi. nmer. 2. p. 100. 

 Ageratumaltissimum. Sp.pl. ed. 2. p. II76. 

 Icon. Moris, hist. 3. s. 7. t. 18./, il. 



