94 COMPOSITE. Mikania. 



20-flowered, 4 or 5 lines long : bracts of involucre with pointed somewhr.t spreading tips : 

 akeues rather short : pappus of 10 or 12 bristles and about as many small and narrow acute 

 squamellaj. — Pacif. li. Kep. vi. 96, t. 9, «& Bot. Calif, i. 299. — Canons, San Bernardino 

 desert, Southeast California to Arizona and S. Utah, Bigelow, Parry, Newberry, &.c. 



9. MIKANIA, Willd. {Prof. J. G. Mikan, of Prague, or his son and suc- 

 cessor, ,/. C. Mikan, Avho collected in Brazil.) — Twining perennials, or many 

 erect and shrubby in tropical America, where most of the numerous species 

 occur ; with opposite leaves and small variously clustered heads. Our species, 

 confined to the Atlantic States, have slender-petioled angulate-cordate leaves, 

 corymbosely cymose heads of pale flesh-colored and more or less fragrant flowers, 

 produced in summer and autumn ; the throat of the corolla abruptly dilated from 

 the narrow tube, and broadly campanulate. — Willd. Spec. iii. 1472; Benth. & 

 riook. Gen. ii. 246. 



M. scandens, Willd. Glabrous or pubernlent : herbaceous stems high-twining: leaves 

 somewhat hastately or deltoidly cordate, acuminate, irregularly and olrtusely angulate- 

 dentate or repand, rarely almost entire : heads crowded, about 3 lines long : involucral bracts 

 lanceolate, acuminate or slender-apiculate : corolla-lobes ovate, much shorter than the very 

 wide throat: akeues a line long, resinous-atomiferous: — Torr. & Gray, Fl. ii. 91 ; Baker 

 in Fl. Bras. vi. 248, in part. Evpatnrium scandens, L. ; Jacq. Ic. Ear. t. 169; Michx. Fl. 

 ii. 97. — Moist ground along streams, New England and W. Canada to Florida and Texas. 

 (Mex. and W. Ind. to S. Brazil, mostly in peculiar forms, if not species.) 



Var. pubescens, Torr &. Gray, 1. c. From slightly to densely pubernlent. — M. pn- 

 hesrens, Mulil. Cat. 71 ; Xutt. Gen. ii. 136. 3f. menispermea, DC. Prodr. v. 200. — Southern 

 Atlantic States to Texas. 



M. COrdifolia, Willd. Pubernlent or pubescent, frutescent at base: branchlets often 

 striate-angulate : leaves broadly cordate and aiignlate : inflorescence more compound : heads 

 4 or 5 lines long : involucral bracts oblong-linear, obtuse or muticous : corolla-lobes oblong- 

 lanceolate, fully as long as the campanulate throat : akenes 1 ^ to 2 lines long, glabrous. — ■ 

 Cacalia cordifolia, L. f. Suppl. 351, & herb. Mutis, fide Baker, 1. c. 2.53. M. cordi/olia (and 

 according to Baker also M. ruhitjinosa). Smith. M. snareolens, IIIIK. Nov. Gen. &, Spec, 

 iv. 135. M. r/onocluda, DC. 1. c. 199. il/. concolmdacea, DC. 1. c. — W. Louisiana, IlaJc. 

 (Mex., W. Ind., Brazil.) 



10. EUPAT6RIUM, Tourn. Tiioroughwort, &c. {Mithridates Eu- 

 pator, king of Pontus.) — Perennial herbs, a few annuals, and some shrubby in 

 the warmer regions ; with commonly opposite leaves, mostly resinous-atomiferous 

 and bitter ; the small heads cor3'mboseIy cymose, or sometimes paniculate, rarely 

 solitary. Fl. late summer and autumn. A vast genus as received in DC. Prodr. 

 v. 141, and more extended by Benth. & Hook. Gen. ii, 245 ; chiefly American. 

 The sections are too confluent for good subgenera. 



§ 1. OsMiA, Benth. Involucre cylindrical or cylindraceous ; the bracts squa- 

 maceous, coriaceous or firm-chartaceous, striate, pluriseriate, closely imbricated, the 

 exterior successively shorter, obtuse : receptacle of the flowers flat or rarely 

 convex : heads mostly clustered in corymbiform cymes : branching shrubs, or 

 rarely herbs with suffrutescent base, tropical or subtropical : leaves all opposite. 

 — Osmia, Schultz Bip. § Cylindrocephala, DC. 



* Involucral bracts abruptly appendiculate with short foliaceous or partly colored squarrose tips: 

 heads pedunculate. — § Phyll'tcrocephala, Gray, Fl. Wright, i. 88. 



E. sagittatum, Gray, 1. c. Probably suffruticose, pubernlent: leaves (inch long) slender- 

 petioled, sagittate or hastate, otherwise entire, acute or acuminate: heads nearly half-inch 

 long, in threes terminating divergent branchlets : involucre 30-40-flowered, its bracts firm 



