102 COMPOSITE. Eupatorium. 



= = Involucre less than 2 lines long; the bracts broader, green externally, 2-3-nerved when 

 dry: inflorescence somewhat paniculate and leafy. 

 E. pauper culum, Gbay. A foot or two high, nearly glabrous: leaves ovate-lanceolate 

 (mostly inch long), roundish at base, obtusely serrate, on rather short slender petioles : 

 heads 25-flowered, small (2 lines high), few in the numerous small cymes, which are panicu- 

 . lately disposed, terminating short leafy branches : bracts of the involucre 10 or 12, oblong- 

 lanceolate, pnberulous, little over half the length of the white flowers : corolla-lobes slightly 

 \ hirsute outside or becoming naked : pappus soft and white. — Proc. Am. Acad. xvii. 205. — 

 Santa Bita Mountains, S. Arizona, along brooks and on dripping rocks, Pn'nyle. 

 == = == Heads comparatively large and few in the cymes, 25-35-flowered: involucre 3 or 4 

 lines high, rather broad. 

 E. Rothrockii. Glabrous (or peduncles somewhat pubescent) : stems a foot or two high, 

 simple or brachiately branched above : leaves bright green, ovate or deltoid-ovate, usually 

 acuminate, coarsely and sharply serrate, sometimes irregularly or doubly serrate, and the 

 teeth tipped with a callous gland (the larger 2 inches long, with petiole half-inch or less, 

 smaller in depauperate plants nearly sessile): bracts of the involucre 15 to 17, equal and 

 ' similar, linear-lauceolate, mostly acute, glabrous, when dry pale and somewhat scarious and 

 conspicuously 2-3-nerved, nearly equalling the white and soft barbellulate-scabrous pappus : 

 corolla-lobes rather strongly bearded externally. — Mountains of S. Arizona: on Mount 

 Graham, Eothrock (740, 741) ; Chiricahua Mountains, Lemmon. Heads larger and fewer 

 than in the Mexican E. (p'andidentatum^ DC-; the involucre not imbricated as in 2?, 

 Fendteri. 



§ 3. CoNOCLiNiuM, Benth. Receptacle of the flowere conical or hemispherical : 

 otherwise as in the JSximbricata subsection of the preceding : habit of Acferatnm _ 

 § Goelestina: flowers blue or violet (sometimes white), sweet-scented: bristles of 

 the pappus rather scanty in a single series : leaves opposite : perennial herbs. — 

 GonocUnium, DC. Prodr. v. 135. 



"■B. CCBlestinum, L. (Mist-flowek.) Somewhat pubescent: stems erect, branched at 

 summit : leaves deltoid-ovate or subcordate, obtuse or acutish, obtusely serrate, rarely with 

 some coarser salient teeth, slender-petioled : cymes rather compact : receptacle obtusely 



^ conical. — Spec. ii. 838 (Dill. Elth. t. 114 ; Pluk. Mant. t. 394) ; Michx. Fl. ii. 100. Calcstina 

 caruJea, Spreng. Syst. iii. 446, not Cass. Conoclinkim ca'lestinum, DC. 1. c. ; Torr. & Gray, Fl. 

 ii. 92.— Moist shady ground. New Jersey to Florida and Texas, and west to Arkansas'and 

 lUinois. Conodinium dichotomum, Chapm. in Bot. Gazette, iii. 5, appears to be a lax and 

 more branched form, of Florida and Texas, found only on the coast, approaching the var. 

 saliimm, Griseb. Cat. Cub. 146. (Cuba.) 



E. betonicum, Hemsl. From tomentose-vilh.us to glabrate : stems lax, loosely branch- 

 ing : branches naked and pednncnliform at summit, bearing some small corymbose or panic- 

 ulate cymes : leaves oblong, mostly obtuse, in the original form with cordate base, crenate, 



, pet.oled : receptacle low-conical. -Biol. Centr.-Am. Bot. ii. 93. ConocUnium bctonkum, DC. 

 Prodr. V. 135 ; Gray, Bot. Mex. Bound. 76. - Southern border of Texas on the Rio Grande, 

 iiclwu, a glabrate form. (Adjacent Mex.) 



^ 1, "^^u" SUbintegrum. Leaves sometimes truncate, commonlv obtuse or cnneate at 



base, obscurely crenate denticulate, repand or entire, from ,illons or cinereous-tomenfulose 



nearly glabrous^- Comrhnvm bHonicu,,,, var. im.ririfolnnn. Gray, PI. ^^'right. i. 88. Eupa- 



J™) ■''' ^''"'^- 19^-S°'^«i'^™l'»der of Texa^, Wri,,!,,, Bigdoro, &c. 



-B. Greggii. Minutely puberulent : stems erect, a foot or two high, bearing one or few 

 35 lf"t or'^rfT "' *''.^"^'^'"^ pednncnliform summit: lea.cs'Jrearh- scs;:;ic, palmately 

 3-5-cleft or parted; the d,v,s,ons lac.niate-pinnatifid into narrow lobes : receptacle low-con- 



tT\\%^' , T ^'^■'^''"^- ^'''"- '00 (name only), no. Benth. Bot, Sul d,. 113, 

 Wdef ir r^ ■' M ;?''^'T^f \- ^"'"- Sronncl, S. T,„as to Arizona near the UoA^ 

 border, II ,,,,/,'. &c. (Adjacent Mex., first coll. 1„- Oret/ff ) 



E. E^TEUM, Ral in Med Rep. N. Y., is doubtless a false species. K. okassie6e,um and 

 E. yiolAceum, Raf. Fl. Ludov., ai-e fictitious, as ai-e all the species of that work. 



