764 PLANT LIFE OF ALABAMA. 



This variable species comprises two forms which are closely connected by inter- 

 mediate forms and difficult to separate, although the extreme forms from the moun- 

 tain region appear quite distinct by the petiolate, broader, less acuminate, and more 

 coarsely serrate leaves. From the material examined in the National Herbarium 

 this form appears to prevail in the Northern States. Specimens from the coast pine 

 barrens agree exactly with the description of Michaux, having the stem divided 

 above into long, slender, few-leavedfastigiate branches bearing a rather close corymb, 

 and the acuminate leaves with the truncate base sessile. May prove a good variety. 



Type locality : "Hab. in humidis Carolinae." 



Herb. Geol. Surv. Herb. Mohr. 



Eupatorium rotundifolium L. Sp. PI. 2 : 837. 1753. FALSE HOAKHOI \i >. 



Ell. Sk. 2 : 300. Gray, Man. ed. 6, 240. Chap. Fl. 195. Gray, Syn. Fl. X. A. 1, ]>t. 2 : 

 99. Coulter, Contr. Nat. Herb. 2 : 178. 



Carolinian and Louisianian areas. New Jersey to Florida, west to Texas; Ohio 

 Valley to Missouri and Arkansas. 



ALABAMA: Over the State. Open dry ground. Clay County, Shinboue V alley, 

 Elders, 1,000 feet. Cullman County, 800 feet altitude* Mobile County. Flowers 

 white; August, September. 



Type locality: "Hab. in Virginia, Canada/' 



Herb. Geol. Surv. Herb. Mohr. 



Eupatorium pubescens Muhl. ; Willd. Sp. PI. 3 : 1755. 1804. 



Eupatorium rotundifolium var. oratnm Torr. ; DC. Prodr. 5 : 178. 1836. 



E. rotundifolium var. pubescens B. S. P. Prel. Cat. N. Y. 25. 1888. 



Ell. Sk. 2 : 301. Gray, Man. ed. 6, 240 ; Syn. Fl. N. A. 1, pt. 2 : 91). 



Carolinian and Louisianian areas. Southeastern New England to southern Vir- 

 ginia and Florida, west to Mississippi. 



ALABAMA: Mountain region to Coast plain. Open damp places. Lee County, 

 Auburn (Baker $ Earle). Mobile County. Flowers white; August. Frequent. 



Type locality: " Hab. in America boreali." 



Herb. Geol. Surv. Herb. Mohr. 



Eupatorium sessilifolium L. Sp. PI. 2 : 837. 1753. UPLAND BOXKSKT. 



Eupatorium truncatum Ell. Sk. 2 : 298. 1821-24. Not Muhl. 



Gray, Man. ed. 6, 240. Chap. Fl. 195. Gray, Syn. Fl. N. A. 1, pt. 2 : 99. 



Alleghenian and Carolinian areas. New England, northwestern New York?, 

 northeastern Ohio, Michigan, Missouri, south from Virginia along the mountains to 

 South Carolina. 



ALABAMA: Mountain region. Dry open woods; table-lands of Warrior Basin. 

 Dekalb County, Sand Mountain, 1,500 feet. Flowers white; August, September. 

 Rare. 



Type locality : " Hab. in Virginia/' 



Herb. Geol. Surv. Herb. Mohr. 



Eupatorium perfoliatum L. Sp. PI. 2 : 838. 1753. BONESKT. THOROUGHWORT. 



Ell. Sk. 2 : 302. Gray, Man. ed. 6, 241. Chap. Fl. 196. Gray, Syn. Fl. N. A. 1, pt. 2:99. 



Allegheniau to Louisianian area. Nova Scotia, New Brunswick, Ontario: New 

 England, west to Minnesota, Nebraska, and Dakota, south to Arkansas; and from 

 the Ohio Valley to Florida, and west to Louisiana. 



ALABAMA: Over the State. Damp shady banks; thickets. Clay County, Elders, 

 1,000 feet altitude, to Mobile; borders of river swamps. Flowers white; July to 

 September. Frequent. 



Economic uses: The herb is the boneset or Eupatorium of the United Stale- 

 Phai-macopreia. 



Type locality: " Hab. in Virginiae aquosis." 



Herb. Geol. Surv. Herb. Mohr. . 



Eupatorium incarnatum Walt. Fl. Car. 200. 1788. DIFFUSE EUPATOKHM. 



Ell. Sk. 2 : 305. Chap. Fl. 196. Gray, Syu. Fl. N. A. 1, pt. 2: 101. Coulter, ( 'ont r. 

 Nat. Herb. 2:179. 



Louisiauian .area. North Carolina to Florida, west to western Louisiana and 

 Texas. 



ALABAMA: Lower hills. Damp thickets. Tuscaloosa County. Flowers a/ure. 

 July; 2 to 3 feet high; weak, reclining local. Only locality observed. June, 1883 

 (C. Mohr). 



Type locality : South Carolina. 



Herb. Geol. Surv. Herb. Mohr. 



