Stevia. COMPOSITE. 91 



Var. SCaberrima. Leaves mostly short and sparsely denticulate or toothed, from 

 linear to oblong-lanceolate, scabrous to rongh-hispidulous above : bracts of tin.- imolucre or 

 some of them produced into long and loose or spreading subulate or filiform tips. Torr. & 

 tiray, 1. c. V. scahi.n-inin, Nutt. Gen. ii. 134; Ell. 1. c. South Carolina to Florida. 



Var. Texaiia. Stem virgate, rather tall : lower leaves large, lanceolate (3 to 6 inches 

 long); upper ones small, linear or subulate: cyme naked: bracts of the involucre all point- 

 less or merely mucronate. -- Torr. & Gray, 1. c., character, without name. I'ine woods, 

 Arkansas, Louisiana, and Texas. 



Var. pu.rn.ila, CIIAPM. Glabrous and hardly at all scabrous, even the leaves; these 

 small, mostly linear and entire : stem slender, a span to 18 inches high : c\ me of feu heads : 

 bracts of the involucre pointless. Bot. Gazette, iii. 5. Wet pine barrens, S. E. Florida, 

 Blodyett, Gurbcr. 



H- -H- -H- -H- Loaves with revolute entire margins, not scabrous, reinless, lanose beneath. 

 V. Lindheimeri, GRAY & ENGJBLM. About a foot high, excessively leafy up to the corym- 

 biform cyme, lanose-cauescent, even to the obtuse and pointless bracts of the involucre: 

 leaves narrowly linear (l^ to 3 inches long, a line or two wide), glabrate and green ab'>-, < ; 

 heads all pedunculate: akenes glabrous: pappus purple. Proc. Am. A cad. i. 40, & H. 

 Lindh. ii. 217. Rocky hills and plains, W.Texas, Luulht !i>nr, Writ/lit, &c. U< rlandier 

 collected an apparent hybrid between this most distinct species and V. Buhlwitiii. 

 * * Outer pappus inconspicuous and rather setose than squamellate: cauline leaves few and small. 



V. oligophylla, Micux. Minutely scabrous-pubescent : stem about 2 feet high, slender, 

 hearing a few heads in a very loose naked cyme : radical leaves ample (4 to 8 inches long) 

 in a rosulate tuft, oblong; cauline lanceolate, few and small, the uppermost reduced to 

 subulate bracts ; all veiny and denticulate: heads 15-30-flowered : bracts of the involucre 

 subulate (mostly from a broad base), loose : bristles of the pappus slender: akenes hirtellous 

 on the ribs. Fl. ii. 94 ; DC. Prodr. v. 02 ; Torr. & Gray, Fl. ii. 57. Sardinia < 'arolinensis, 

 Dill. Elth. t. 261. Chrysocoma acaulis, Walt. Car. 190. Low pine barrens, X. Carolina to 

 Florida, near the coast. Varies with foliage soft cinereous-pubescent : S. Carolina, J. 

 Donnell Smith. 



TRIBE II. EUPATORIACE^, p. 50. 



4. STfiVIA, Cav. (Dr. Pedro Esteve.) Herbs, rarely suffruteseent plants ; 

 with mostly opposite and triplinerved leaves, small and narrow heads usually 

 corymbosely crowded in terminal naked cymes or fascicles, and flowers white or 

 rose-purple : pappus variable ; the awns Avhen present barbellate-scabrous. - 

 A large Mexican genus (a few species reaching our borders), also well developed 

 on the eastern side of South America in corresponding latitudes. Cav. Ic. iv. 

 32, t. 354-35 G ; Schultz Bip. in Linn. xxv. 268. 



* Branches and heads paniculate, loose: root annual. 



S- micrantha, LAG. Puberulent and somewhat viscid : stem slender, a foot or two high, 

 bearing short flowering branches almost from the base : leaves thin, ovate wiili snbcnneatc or 

 rarely subcordate base, serrate (inch long), petioled : heads pedicellate in the loose dusters, 

 3 and 4 lines long : pappus of 3 awns with short paleaceous-dilated base, or in one or two 

 flowers occasionally awnless. Elench. Hort. Madrid, 1815, & Nov. Gen. & Spec. 27. 



5. macclla, Gray, PL Wright, ii. 70. Shady cliffs, New Mexico, IIV///A/. Southern Arizona, 

 Lemmon, by which is generally meant Mr. J. G. and Mrs. Sam Plummcr Lcmmon, associates 

 in exploration. (Mex.) 



* * Heads loosely cymose-paniculate and pedunculate: root perennial. 



S. amabilis, LEMMON. Stem slender and virgate, or with long virgate brandies, about 2 

 feet high: leaves all alternate, linear with narrowed base, or the lowest oblanceolate, eniire, 

 thinnish: involucre slender, glandular-viscid : flowers purple: pappus of 5 long awns and 

 with extremely short (broader than long) intermediate paleaj. Gray, Proe. Am. Acad. 

 xix. 1. Plains near Cave Canon, S. Arizona, Lemmon. 



