Eupatorium. COMPOSITE.. 97 



++ Very numerous heads in corymbosely paniculate cymules, S-9-flowered. 

 E. pinnatlfldum, Ell. Pubescent, 3 or 4 feet high . cauline leaves mainly opposite, 

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

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

 mucronate cusp. — Sk. ii. 295 ; DC. Prodr. v. 176 (not of 149, which is the earlier E. bruriii- 

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

 near the coast, N. Carolina to Florida. 



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



E. coronopifolium, Willd. 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 lines long, in close spiciform 

 panicles which are usually collected in an oblong thyrsus. — Spec. iii. 1750; DC. 1. o. 176 ; 

 Torr. & Gray, 1. c. 83. E. compositifolium, Walt. Car. 199. E. raeemosum, Bertol. Misc. 

 v. 26, t. 1 , from specimen with upper cauline and rameal leaves all entire. — Chrysocoma 

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

 Narrow-leaved forms too nearly approach the next. 



E. fcBniculaceum, Willd.I.c. (Doc-Fennel.) Herbage fennel-scented when bruised, and 

 slightly acrid: stem 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, loosely race- 

 mose-paniculate at the ends of the upper branches. — E. fosniculoides, Walt. I.e. E. lepto- 

 phyllum, DC. 1. c. Artemisia procerior, etc., Dill. Elth. i. 38, t. 37. A. capi/lifolia, Lam. 

 Diet. i. 267. Mikania artemisioides, Cass. Diet. Sci. Nat. liv. 130. Traganthes, Wallr. Sched. 

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

 Florida. The varieties, glabrum and lateriflorum, Torr. & Gray, FL, have no permanence. 

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



^ — n — -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. 



++ Thyrsoid-paniculate, suffruticose: involucral bracts 3-nerved. 

 E. SOlidaginifolium, Gkay. A foot or two high, with simple branches, glabrate or 

 minutely pubescent : leaves opposite, very short-petioled, oblong- or narrowly ovate-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 : involucral bracts 

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

 & ii. 74. — Dry hills between the Limpio and the Eio Grande in W. Texas, and near Santa 

 Cruz, Arizona, Wright, Pringle, &c. 



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

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

 nearly so. 

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

 broad: involucre cinereous-pubescent. 

 E. mikanioides, Chapm. Tomentose-pubescent when young, soon glabrate : stems simple, 

 a foot or two high from a creeping base : 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, Shuttleworth in distrib. coll. Rugel.— Low and sandy ground, coast of Florida, 

 Chapman, Rugel, &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 6 inches 

 long), many of the upper alternate, some of these cuneate at base : heads 7-1 5-flowered, very 

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

 Gray, Fl. ii. 89. E. ambiguum, 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, 

 E1L -~Low grounds, Maryland to Iowa, Florida, and Texas ; Sept. to Nov. (Adj. Mex.) 



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