nrRl SYXGENESIA 453 



*h the leaflets linear-subulate, nerved and striate, slightly scabrous, imbri- 

 A Florets li-lit. bluish-purple, fragrant. Akenes angular, resinous-dotted; 

 U5 pilose, scabrous (crown-form, entire, Leasing / a membranaceous crown, 

 ST. Reetptade conic, naked, punctate. 



//„& Borders of woods, and thickets j Londongrove : rare. FL Sept. JV. Octo. 



ft&f This pretty species was collected in 18-27, by Wm. Jackson, Esq. It is 



v abundant along the Susquehanna, towards its mouth ; but rare in this County. 



Thave not observed the crotenform membranaceous pappus-on which, in part* 



lbifl a ha8 been generically separated from Eupotorium. 



b. Leaves verticillate : Jlorets purple. 



g E. pcRprnKUX, L. Stem mostly fistular, glaucous ; leaves in vcr- 

 tktb'of 4 to 6, lance-oblong, or lance-ovate, acuminate, serrate, more 

 or less rugose- veined and scabrous-pubescent. Beck, Hot. p. 197. 



PCRPIE EUPATOIIIUX. 



Root perennial. Stem 3 or 4 to 6 or 7 feet high, simple, more or less fistular, 

 striate, smoothish and generally glaucous-purple. Leaves usually in verticils Of 

 six 4 to 6 or 8 inches long, and 1 to 2 inches wide, Kncc-oblong, acuminate at each 

 end' smoothish above, rugose-veined and roughish-pubescent beneath, on petioles 

 half an inch to an inch long. Heads of flowers in a large terminal compound cor- 

 ymb; branches and pedicels roughish-pubescent; involucre imbricated, mostly 

 purple, the outer leaflets ovate, pubescent, the inner ones lance-liaear, longer, 

 mostly obtuse, 3-nerved, minutely ciliate. Florets pale purple. Akenes linear- 

 oblong, angular, sprinkled with resinous dots ; pappus hair-like, scabroye. 



Var. maculatum. Stem nearly solid, sulcate-striate, more scabrous, 

 with dark purple linear spots; leaves (sometimes ternate) broader and 

 more ovate, more rugose, resinous-dotted and scabrous. 

 E. maculatum. Willd. &c. Icon, Bart. Am. 3. tab. 102. 

 Also? E. punctatum. Pursh, Am. 2. p. 515. Beck, I. c. 

 Hob. Moist low grounds, and thickets : frequent. Fl. August. Fr. Sept— Oct/). 

 Obs. I think, with Prof. Hooker, that E. maculatum must be referred to E.pur- 

 pureum,— though it often seems to present a pretty well-marked variety. Dr. 

 Barton speaks highly of it, as a tonic. 



9. E. trifoliatum 1 L. Stem solid ; leaves mostly in verticils of 3, 



large, lance-ovate, or oblong-ovate, cuneate at base, coarsely serrate. 



Beck y Bot.p. 196. 



E, ternifolium ? Ell. Sk. 2. p. 306. 



Also ? E. verticillatum. Willd. and the Authors here quoted. 



Three-leaved Eupatorium. 



Root perennial. Stem3 to 4 feet high, simple, mostly solid with pith, striate, 

 m>ro or less pubescent. Leaves usually ternate, sometimes in fours, 3 or 4 to 10 

 or 12 inches long, and 2 to 4 or 5 inches wide, oblong-ovate, acuminate, very coarsely 

 serrate, entire and abruptly narrowed at base, cuneately decurrent on the petiole* 

 of a thinnish texture, more or less roughish-pubescent, and sprinkled with resinous 

 dots beneath ; petioles half an inch to 2 inches long. Heads of flowers in a ter- 

 minal corymb which is usually much smaller than in the preceding, and not w 

 purple ; in other respects very similar. 

 Hob. Bmlersof woodlands, and thickets: frequent. FL August. FY. Sept. 



Obs. I have uj doubt this is the E. verticillatum of Elliott. In its usual appoar- 



