Eupatorium. COMPOSIT.E. 97 



++ Very numerous head=i in corj-mbosely paniculate Ci-mules, S-Q-flowered. 

 B. pinnatifldum, Ell. Puliesi-ent, 3 or 4 feet high, cauliue leaves mainly opposite, 

 sometimes 4-iiate; lower 2-3-piQnately parted and inciseil into oblong or lanceolate di\ isions 

 and lolies ; upjier once or twice parted into linear lobes : involucral bracts obtuse with a 

 _, nmcronate cusp. — Sk. ii. 295 ; DC. Prodr. v. 17(5 (not of 149, which is tlie earlier E. briinii- 

 folium, Hook. & Am., & E. jiinnatijissuin, Buek.) ; Torr. &, Gray, 1. c. 83. — Low grounds, 

 near the coast, X. Carolina to Florida. 



++ ++ Very numerous heads racemosely and thyrsoidly paniculate, 3-6-flowered: autumnal. 



■ E. ooronopifolium, ^\'iLLr.. Puberulent and sometimes pubescent, somewhat glutinous 

 and balsamic-aromatic, 3 or 4 feet high : lower leaves more commonly opposite, twice 3-7- 

 parted into linear entire or sparingly incised lobes; upper less compound, uppermost often 

 entire, from broadly to narrowly linear ; heads from over 2 to 3 Hues long, in close spicilorm 

 panicles which are usually collected in an oblong thyrsus. — Sjiec. iii. 17.')0; IJ(.'. 1. c. 17G : 

 Torr. & lirny. 1. c. S.J. E. compositifolium, Walt. Car. 199. E. racemosum, Beitoh .Alisc. 

 V. 26, t. 1, from specimen with upper cauline and rameal lea\es all entire. — ('hrijsocoma 

 coronoplfolia, Jlichx. Fl. ii. 102. — Sandy or dry soil, X. Carolina to Florida and Texas. 

 Narrow-leaved forms too nearly approach the next. 



. E. foeniciilaceuin, AVillh.I.c. (Dog-Fenxll.) Herbage fennel-scented when bruised, and 

 slightly acrid : stem villous below with many-jointed slightly viscid hairs, 4 to 10 feet high, 

 extremely leafy : leai cs mostly glabrous, nearly all alternate, more compound than of the 

 preceding and the lobes very narrowly linear or filiform : heads 2 lines long, looselv race- 

 mose jianiculate at the ends of the upper brancljes. — E. fa-niadoides, Walt. 1. c. E. lepto- 

 plii/llum, UC. 1 c. .irt:misia procerior, etc.. Dill. Elth. i. .'i.S. t. 37. A. capilllfoUa, l.am. 

 Diet. i. 2(17. Mildnia artemisioides, Cass. Diet. Sci. Xat. liv. 130. Traffantlies. Wallr. ^. licil. 

 Grit. i. 456, ex Cass. 1. l. — Jloist pine barrens and low fields, common fi'om X. CaroHna to 

 Florida. The varieties, glabrum and lateriflorum, Torr. & (.;ray, FL, ha\e no permanence. 

 E. leptoph yUum, DC, is only the more slender form. ( W. Ind.) 



4— -I— -4— Heads 3-15-flowered, 3 to .5 lines long: leaves undivided: flowers white (rarely pur- 

 plish): involucre of rather few (J> to 12 or rarely 15) bracts. 



■H- Thyrsoid-paniculate, suffruticose; involucral bracts 3-uerved. 

 -E. solidaginifolium, tiK.w. -V foot or two high, with simple brandies, glabrate or 

 minutely pubescent: leaves opposite, very shcirt-petioled, oblong- or narrowly ovate-lance- 

 olate from a rounded base, acute, entire or oliscnrely dentate, 3-nerved at nr near the liasc,. 

 • 10 to 18 lines long : thyrsus small (2 or 3 inches long), leafy at base, obloni:; or interrupted ; 

 heads few and crowded in each short-pedunculate cymule, 3-o-flowered : involucral bracts 

 about 8. almost in two ranks, linear-lanceolate, acute : akenes pubescent. — PL Wright, i. 87, 

 & ii. 74. — Dry hills between the Limpio and the P>io Grande in W. Texas, and near .'>auta 

 Cruz, Arizona, Wright, Primjle, &.C. 



T-+ T-+ Corymbosely cymose or fastigiate inflorescence: herbaceous perennials, mostly copiously 

 resinous-atomiferous, some species becoming balsamic-glutinous : involucral bracts nervtles? or 

 nearly so. 



= Leaves conspicuously petioled from a mostly truncate or abrupt base, strongly serrate: cymes 

 broad: involucre cinereous-pubescent. 



B. mikanioides, Chap.m. Tomentose-pubescent when j-otmg, soon glabrate : stems simple, 

 a foot or two high from a creeping lia.sr: leaves opposite, deltoid-ovate or the uppermost 

 oblong, obtuse, thickish and rather fleshy, glandular-punctate, obtusely dentate (an inch or 

 two long) : heads 5 -flowered : involucral bracts linear, rather obtuse. — Fl. 195. E. crassi- 

 folium, Sliuttleworth in distrib. coll. Eugeh — Low and sandy ground, coast of Florida, 

 Chapjnaii, Ritgel, &c. 



E. serotinum, !Micirx. Puberulent : stems 5 to 7 feet high, corymbosely branched above : 

 leaves oblong- or ovate-lanceolate, acute or acuminate, thinnish, acutely serrate (3 to 6 inches 

 long), many of the upper alternate, some of these cuneate at base : heads 7-15-flowered, very 

 numerous: involucral bracts (10 or 12) linear-oblong, very obtuse. — Fl. ii. 100; Torr. & 

 Grav, Fl. ii. 89. E. amhiguum. Hook. Comp. Bot. Mag. i. 96, as to ' Covington ' plant, is either 

 this species or a (hybrid ?) form between it and E. semiserratum, DC. the E. parviflorum, 

 EU. — Low grounds, ^Maryland to Iowa, Florida, and Texas ; Sept. to Xov. (Adj. Jlex.) 



