94 COMPOSITE. Mlhmia. 



ao-flowered, 4 or 5 lines long : bracts of involucre ivitli pointed somewhat spreading tips : 

 akenes rather short : pappus of 10 or 12 liristles and about as many small and narrow acute 

 squamellaj. — Pacif. R. Rep. vi. 96, t. 9, & Bot. Calif, i. 299. — Caiions, San Bernardino 

 desert, Southeast California to Arizona and S. Utah, Bigelow, Parri/, Newhefry, &c. 



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

 cessor, J. O. Mikan, who 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 abruptlv dilated from 

 the narrow tube, and broadly campanulate. — AV'illd. Spec. iii. 1 472 ; Benth. & 

 Hook. Gen. ii. 246. 



**«>t M. SOandens, Willd. Glabrous or pnberulent : herbaceous stems high-twining : leaves 

 somewhat hastately or deltoidly cordate, acuminate, irregularly and obtusely 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 tlian the very 

 wide throat: akenes a hue lung, resinous-atomiferous. ■ — Torr. & Cray, Fl. ii. 91 ; Baker 

 in Fl. Bras. vi. 248, in part. Kupatornim scandens, If. ; Jacq. Ic. Rar. t. 169; Michx. Fl. 

 ii. 97. — Jloist 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, Tore & Gkat, 1. c. From slightly to densely puberulent. — Jf pn- 

 bescens, Muhl. Cat. 71 ; ISTutt. Gen. ii. 136. J/, menispermea, DC. Prodr. i-. 200. — Southern 

 Atlantic States to Texas. 

 M. cordifolia, Willd. Puberulent or puliescent, frutescent at base: branchlets often 

 striate-angulate : leaves broadly cordate and angulate : 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 I ^ to 2 lines long, glabrous. — 

 Cacalia cordifolia, L. f. Suppl. 351, & herb. Mutis, fide Baker, 1. c. 253. M. cordifolia (and 

 according to Baker also M. rubirjinosa), Smith. M. suarcolens, HBK. Nov. Gen. & Spec. 

 iv. 135. M. gomclada, DC. 1. c. 199. J/, convolvulacea, DC. 1. c. — W. Louisiana, Hale. 

 (JMex., AY. Ind., Brazil.) 



10. EUPAT6RIUM, Tourn. Ti-iOKoronwoKT, &c. (miiridates En- 

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

 the warmer regions ; with commonly opposite l<';ives, mostly resinous-iUomiferous 

 and bitter ; the small heads corymbosely 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. OsjiiA, Benth. Involucre cylindrical or cylindraceous ; the bracts squa- 

 maceous, coriaceous or firm-chartaceous, stri;ite, pluriseriato, 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. § CijJindroccj^hala, DC. 



* Involucral bracts abruptly .ippendiculate will, short foliaceous or partly colored squarrose tips: 



headspeduncnlate. — § P*j//„cT„r,7,/m;rt, Gniy, PI. Wrislit. i. 88. ' 



B. sagittatum, Gray, 1. c. Probably suffruticose, puberulent: loaves (inch long) slender- 



pet.olcd, .sagittate or hastate, otherwise entire, acute or acuminate : heads nearlv half-inch 



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



