COMPOSITE. 449 



pendaged ; the bordering stigmatic lines extending to and around the naked apex. 

 Akenes clavate-pyriform, glabrous, many-striate, with small epigyuous areola 

 bearing a pappus of 20 stout and long-plumose bristles in a single series, these 

 united at base in a ring and early deciduous together. 



D. Howellii. An acaulescent and depressed little herb, from an apparently annual tap- 

 root, somewhat woolly but early glabrate ; the thickish and obovate or oval entire and 35- 

 ncrved leaves all crowded in a rosulate tuft at the surface of the ground, bearing among and 

 between them, on very short and crowded branches, numerous small subsessile heads in a 

 depressed tuft: flowers purplish or flesh-color. On Stein's Mountain in 8. E. Oregon, 

 June, 1885, T. Howell, and rather later, Cusick. 



68. MEL AMPCDIUM, L. P. 239, at end of genus, add : - 



* * * Coarse and broad-leaved annual: akene wholly enclosed in its indurated bract: ray and 

 disk-corollas yellow. 



M. PERFOLIATUJI, HBK. Mostly glabrous, divergently branched, bearing slender peduncles 

 in the forks : leaves large, rhombic-ovate, serrulate, contracted below as if into a winged 

 petiole, the bases of the pairs connate around the stem, forming a kind of cup : fructiferous 

 bracts lanate-obovate, compressed, smooth and unarmed, except a few small tubercular points 

 at and near the apex. Nov. Gen. & Spec. iv. 274; DC. Prodr. v. 520. A/chia perfofinta, 

 Cav. Ic. i. 10, t. 15. Wedelia perfoliata, Willd. Polymnia perfoliata,Poij:. Waste grounds 

 in Los Angeles, California. (Nat. from Mex.) 



70. SlLPHIUM, L. After S. perfoh'afnm, p. 240, add : 



* ** Stem square, but branches terete: leaves not cupulate-connate; cauliue petioled, all opposite. 



S. brachiatum, GATTINGER. Stem (3 to 5 feet high) and very slender brachiate branches 

 smooth, glabrous, glaucous : leaves somewhat hispidnlous-scabrous, thin ; cauline hastate- or 

 deltoid-lanceolate (4 to 8 inches long), slightly dentate, on rather long and barely margined 

 or naked petioles ; those of the branches small and very distant, sessile, ovate-lanceolate, en- 

 tire ; uppermost reduced to small bracts: heads small (half-inch or so high), on long and 

 slender peduncles : involucral bracts ovate : rays 6 to 8 : akenes ovate-orbicular, narrowly 

 winged, with barely emarginate summit. Bot. Gazette, ix. 192 ; Gray, Proc. Am. Acad. xx. 

 297. S. E. Tennessee, on the Cumberland Mountains near Cowan, Gattinyei; coll. 1867. 



S. AsteriSCUS, L., p. 241. Add the following: 



Var. angustatum. A slender form, hispid : leaves oblong-lanceolate ; all the cauline 

 (except the much reduced uppermost) tapering at base into more or less of a petiole : akenes 

 obovate-orbicular. Chattahooch.ee, Florida, A. H. Curtiss. 



82. FRANSERIA, Cav. 



P. tenuifolia, GRAY, p. 250. Add syn. : Ambrosia tenw folia, Gren. & Godr. Fl. Fr. ii. 305 

 (but fruit wanting in spec. Cosson), not of Spreng. Syst., if that is rightly taken by Baker 

 in Fl. Bras, vi/ 3 150, t. 49, for a coarse-leaved annual plant, apparently too like A. polystachya. 

 Three species of the southwestern borders now to be added to the section ACANTIIOLJENA, 



viz : 



F. COrdifolia, GRAY. (Ed. 1, 445.) Herbaceous, with merely suffrutescent base, erect, 

 2 or 3 feet high, cinereous-puberulent : leaves thin, roundish-cordate or subcordate, obscurely 

 3-5-lobed, serrate, an inch or two long, slender-petioled, sometimes one or two small appen- 

 dages or lobes at or near the summit of the petiole : heads loosely paniculate on slender 

 rather naked branches : fertile involucre 2 or 3 lines long, minutely granulose-puberulent, 

 bearing 4 or 5 short and stout subulate spines. S. Arizona, in the mountains near Tucson, 

 Pringle, Parish. 



