37^ CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Eupatorium verbenaefolium Michx. (having leaves like Ver- 

 bena, the Vervain). 



Eupatorium teucrifolimn Willd. -^ 



Rough Boneset. 



Open woods and borders of swamps, usually in sandy 



soil. Rare at Monroe (Harger), and Southington (Bissell) ; 



occasional in the valley of the Connecticut River, becoming 



frequent near and along the coast. Aug. — Sept. 

 Medicinal like Eupatorium perfoliafum. 



Eupatorium pubescens Muhl. (downy). 



Eupatorium rotundifolium L., var. ovatum Torr. 



Open woods and thickets, mostly in dry ground. Rare at 

 Stratford (Eaton Herb., Eames), and East Haven (Bissell) ; 

 occasional in New London County and in the valley of the 

 Connecticut River. Aug. — Sept. 



Eupatorium sessilifolium L. (sessile-leaved). 

 Upland Boneset. 



Dry woods. Rare in most districts : Southington and 

 Meriden (Andrews & Bissell), Beacon Falls, Ansonia and 

 Seymour (Harger), Salisbury (Mrs. C. S. Phelps). Occa- 

 sional in the vicinity of the coast. Aug. — Sept. 



Eupatorium perfoliatum L. (with leaves meeting around the 



stem). 

 Boneset. Thoroughwort. Ague-weed. Wild Sage. 



Common. Low or wet ground. Aug. — Sept. 



The var. truncatum Gray (cut off) is rare: Old Say- 

 brook (Harger), Woodbury (Eames & C. C. Godfrey). 



A form with the leaves in whorls of three has been col- 

 lected at Bolton (Dr. E. J. Thompson). 



The leaves and tops are much used in domestic medicine 

 and are officinal. 



Eupatorium urticaefolium Reichard (having leaves like Urtica, 



the Nettle). 

 Eupatorium ageratoides L.f. 

 White Snakeroot. 



Occasional, local or frequent. Rocky woods in rich soil. 

 Aug. — Sept. 



The root is medicinal. 



