Eupatorium. COMPOSITE. 97 



-H- Very numerous heads in corymbosely paniculate cymules, 5-9-fiowered. 



B. pinnatifidum, ELL. Pubescent, 3 or 4 feet high, cauliuc leaves mainly opposite, 

 sometimes 4-nate; lower 2-3-piunately parted and incised into oblong or lanceolate divisions 

 and lobes; upper once or twice parted into linear lobes: involucral brads obtuse willi a 

 mucronate cusp. Sk. ii. 29,5; DC. Prodr. v. 17G (not of 149, which is the earlier /,'. Irunii- 

 folium, Hook. & Am., & E. pinnatifissum, Buck.); Torr. & Gray, 1. c. 83. Low grounds, 

 near the coast, N. Carolina to Florida. 



-H- -H- Very numerous heads racemosely and thyrsoidly paniculate, 3-G-flowcred: autumnal. 



E. COronopifolium, WILLD. Puberulcnt and sometimes pubescent, somewhal 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 lines long, in close spiciform 

 panicles which are usually collected in an oblong thyrsus. Spec. iii. 17.">0; DC. 1. c. 170; 

 Torr. & Gray, 1. c. 83. E. compositifoUum, Walt. Car. 199. E. racemosum, Bcrtol. Misc. 

 v. 26, t. 1, from specimen with upper cauliue and rameal leaves all entire. < '/;r/;scoma 

 coronopifolia, Michx. Fl. ii. 102. Sandy or dry soil, N. Carolina to Florida and Texas. 

 Narrow-leaved forms too nearly approach the next. 



E. fceniculaceum, WILLD. 1. c. (DOG-FENNEL.) Herbage fennel-scented when bruised, and 

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

 extremely leafy : leaves 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-paniculate at the ends of the upper branches. E. fceniculoides, Walt. 1. c. E. lepto- 

 . jilt i/i'/iuit, DC. 1. c. Artemisia procerior, etc., Dill. Elth. i. 38, t. 37. A. capillifolia, Lam. 

 Diet. i. 267. Mil'dtiia artemisi aides, Cass. Diet. Sci. Nat. liv. 130. Truqtmiln *, V\ allr. Sched. 

 Crit. i. 456, ex Cass. 1. c. Moist pine barrens and low fields, common from N. Carolina to 

 Florida. The varieties, ylulrum and laterljlorum, Torr. & Gray, FL, have no permanence. 

 E. Icptophyllum, DC., is only the more slender form. (W. Lid.) 



H_ -i ^ Heads 3-15-flowered, 3 to 5 lines long: leaves undivided: flowers white (rarely pur- 

 plish): involucre of rather few (8 to 12 or rarely 15) bracts. 



-H- Thyrsoid-paniculate, suffruticosc: involucral bracts 3-nerved. 



E. solidagillifolium, GRAY. A foot 'or two high, with simple brandies, glabrate or 

 minutely pubescent: leaves opposite, very short-petioled, oblong- or narrowly o\ at (-lance- 

 olate from a rounded base, acute, entire or obscurely dentate, 3-nerved at or near the base, 

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

 heads few and crowded in each short-pedunculate cymule, 3-5-flowered : iinolueral 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 Rio Grande in W. Texas, and near Santa 

 Cruz, Arizona, Wriyltt, Pringle, &c. 



+* +4. Corvmboselv cymose or fastigiate inflorescence: herbaceous perennials mostly copiously 

 resiuous-atomiferous, some species becoming balsamic-glutinous: involucral brads nerveless or 

 nearly so. 

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



broad: involucre cinereous-pubescent. 



E. mikanioides, CIIAPM. Tomentose-puhesceut when young, soon glabrate : stems simple, 

 a foot or two hi-li from a creeping base: leaves opposite, deltoid-oval.- 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. - 



folium, Shuttleworth in clistrib. coll. Rugel. Low and sandy ground, coast of Florida, 

 Chapman, Ituijel, &C. 



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

 leaves oblong- or ovate-lanceolate, acute or acuminate, thinnish, acutely serrate (3 to C, 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. & 

 Gray, Fl. ii. 89. E. amUguum, Hook. Comp. Bot. Mag. i. 90, as to Covington ' plant, is either 

 this species or a (hybrid?) form between it and E. semisernihi,,,, DC., the /.'. parvfflorum, 

 EU. Low grounds," Maryland to Iowa, Florida, and Texas ; Sept. to Nov. (Adj. Mex.) 



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