98 COMPOSITjE. Eupatorium. 



= = Leaves from linear to oblong, sessile or some short-petioled from a narrowed base, chiefly 



opposite; heads mostly 5-flowered, occasionally fi-T-tiowered. 

 11. Involucral bracts with conspicuous white-scarious acute tips; the inner equalling the flowers. 



B. album, L- Pubescent with jointed spreading hairs : stem 2 feet high : leaves oblong- 

 lanceolate or narrowly oblong, commonly obtuse, coarsely serrate, ^einj', sessile (2 to 4 inches 

 long) : cymes fastigiate : involiure (4 or 5 lines long) mostly bright white and glabrous 

 throuo'hout, well imbricated; its bracts slender-mucronate, the outer sometimes pubescent 

 and dark-dotted with resinous globules. — Mant. Ill; AV.ilt. Car. 199. E. r/landiilnsum, 

 Michx. Fl. ii. 98. E. stirjmatostim, Bertol. Misc. v. 1.5, t. 5. — Sandy fields and pine barrens, 

 .Lung Island, N. Y., and Penn. to Florida and Louisiana. 



J Var. subvenosum. More minutely roughish-jjubescent : leaves smaller, only an inch 

 or two long, mostly acute, with smaller and more appressed serratures, less veiny and more 

 manifestly 3-nerved at base, where the upper cauline are not narrower : involucral bracts not 

 so white. — Long Island {E. S. Miller) and Xew Jersey. Burke Co., N. Carolina? 



E. leucolepis, Tore. & Gray. -Puherulent : stem slender, about 2 feet high : leaves lance- 

 olate or linear, minutely and sparingly appressed-serrate, thickish, obscurely .3-nerved at 

 base, closely sessile (1 to 3 inches long) : involucre (3 lines long) canescently pubescent; the 

 narrowed tips of the bracts white-scarious. — Fl. ii. 84. E. hnearifnlijim, Michx., Pursh, &c., 

 partly. E. hyssopi folium. Ell. 8k. ii. 296; Hook. Cnmp. Bot. Jlag. i. 96. E. glavcescens, 

 var. leucolepis, DC. 1. c. 177. — Moist pine barrens. New Jersey to Florida and Louisiana, in 

 the low country, 



h. Involucral bracts obscurely if at all scarioiis, mostl}^ obtuse, at length shorter than the flowers. 



B. hyssopifolium, L. Merely puherulent : stems about 2 feet high, very leafy, commonly 

 with fascicles in the axils, simple, corymbosely branched at summit : leaves occasionally ver- 

 ticillate, linear, obtuse, entire or sparingly dentate, narrowed at base, f to 2 inches long, the 

 broader forms with lateral nerves : cymes crowded : involucre (3 lines long) canescently 

 pubescent and glandular ; bracts rather few, the inner with somewhat scarious margins and 

 tips, obtuse, sometimes apiculate. — Spec. ii. 836 (Dill. fig. & Pluk.) ; Torr. & Gray, Fl. ii. 

 84. E. linearifolium, AYalt. Car. 199; iliclix. 1. c. (partly) ; V.'illd. 1. c. E. linearifolium & 

 hyssopljViiim (chiefly), DC. 1. c. — Dry and sterile soil, Mass. to Florida and Texas, along 

 and toward the coast. \'aries greatly in the foliage, the extreme forms being, on one hand, 

 that with very narrowly linear and much fascicled lea\ cs ; on tlie other, the 



Var. laoiniatum. Leaves lanceolate and linear-lanceolate, irregularly and coarsely 

 dentate, even laciniate. — Penn. and Kentucky to Carolina and Louisiana. 

 - Var. tortifolium. Leaves olilanceolate or spatulate-linear, mostly short, all entire, 

 inclined to be vertical by a twist at base, many of them alternate. — E. tortifolium, Chapm. 

 in Bot. Gazette, iii. 5. E. cuneifoUum, A. Ii. Curtiss, distrib. 1194. — S.andv pine barrens, 

 8. Carolina, Georgia, and Florida. The loiver leaves resemble the uppermost of E. cuneifo- 

 Uum, but are all entire, often reflexed as well as vertical. 



B. cuneifolium, Y'illd. Habit, involucre, .and pubescence of the preceding : leaves short 

 (half to a full inch long), oblanceolate to cuneate-spatulate, obtuse, glaucescent, few-toothed 



toward the extremity, or the upper entire, uppermost very small and oblong-linear. Spec. 



iii. 1753, excl. syn. (not DC.) ; Torr. & Gray, 1. c. S.") ; Chapm. 1. c. E. linmrlfoUwm, Michx. 

 1. c, in part. E. ijlaucesceiis, Ell, 1. c. 297 ; DC. 1. c, excl. var. E. hijssopifoliiim, DC. 1. c, 

 in part. E. cassinif ilium, Bertol. Misc. v. 17, t. 6. — Dry ground. South Carolina, Georgia' 

 Alabama, and Florida. 



' B. semiserratum, ,DC. Tomentulose-pubescent : stems 2 or 3 feet high, much branched 

 abo\ e : leaves oblong-lanceolate, mostly acute or acuminate (commonly 2 or even 3 inches 

 long), serrate with numerous niic(|ual teeth from above or below the "middle to the apex, 

 tripliuerved, rather veiny, narrowed at base, the lower into a short mostly distinct ]ietiole' 

 cymes numerous : heads small : involucre (2 lines long) canescently pubescent, of few bracts ; 

 the longer linear-oblong, very obtuse, tlie others much shorter. — i:. srmisermhim & F cunei- 

 folium, DC. Prodr. V. 177. E. parciflorum, Ell. Sk. ii. 299; Torr. & Grav 1. c. not Swartz. 

 E. amhiguum, Hook. Comp. Bot. Mag. i. 96 (1835), in part only, the Jacksonville plant, but 

 heads not "8-10-flowered."— ^'irginia to Florida, Arkansas, and Texas. In dry and open 

 ground, plants with smaller and firmer leaves pass into 



Var. lancif olium. Glabrate : leaves lanceolate and verging to linear, 5 to 2 lines 



