L'pachys. COMPOSIT.E. 263 



R. heterophylla, Toer. & Gray. C'increous-pubepcent : stem 2 to 4 feet high, slender, 



bearing «'\ei'al somewhat corymljose short-peduncled small lieads- leaves coarsely and 



rather obtu.Nely serrate; some of the radical cordate-obicular and undivided, others with 



3 ovate uudi\ idcd leaflets, the terminal [jctiululate , lower canline 3-a-parted ; upper all ovate, 



c•ua^^el^' toothed, nearly sessile : rays an inch or less long : disk in fruit globose and barely 



half-inch high. — Fl. ii. 312; Chapm. Fl. 228. — Swamps, Jliddle Florida, Clmjiman. 



■y- -y- Rays wholly wanting: proper tube of disk-corollas very short: disk brownish, from ovoid 



to colunmar; its chaffy bracts puberulert at tip: receptacle bodkin-shajied: akenes rathei- large: 



scarinus cupulate-coroniform pappus very conspicuous: stem stout, nearly simple, 2 or 3 feet 



hij^h : involucre foliacebus, variable. — § Acosmia^ Xutt. 



-R. OCCidentalis, Xltt. Nearly glabrous and smooth, or somewhat scabrous-puberulent : 

 leaves uudi\ i.led, ovate or ovate-lanceolate, acuminate, entire or irregularly and sparingly 

 dentate (4 to 8 inches long) ; upper sessile Ijy a rounded or subcordate base: lower abruptly 

 contracted into a short winged petiole, rarely a pair of obscure lateral lobes : disk in age 

 becoming inch and a, half long, and akenes 2 lines long. — Trans. Am. Phil. Soc. vii. 3.i.5 ; 

 Torr. & Gray, I.e. — Woods along streams, Roiky Jlountains of Wyoming to Idaho and 

 Oregon; firat. coll. by XaituU. Sierra >.evada in Butte Co., California {B'dwell], &c. 



. R'. montana, Gray. Snifiother, somewhat glaucous, tall and very .>tout: leaves (8 to 12 

 inches long) pinnately parted into 3 to 9 oblong-lanceolate di\ ision.--, or the lanceolate upper- 

 most canline with 2 to 4 narrow lateral lobes ■ disk cylindraceous or cylindrical, at lengtli 

 often 3 inches long and an inch in diameter : akenes with the deep coroniform pappus 3 or 4 

 lines long. — I'roc. Am. Acad. xvii. 217. — Rocky Mountains of Colorado, E. Hail, Brande- 

 gee, the latter in the Elk ilountaius. 



§ 2. Deac6pi.8. Akenes nearly terete, not angled, mimitelv .striate, destitute 

 of pappus, inserted by an obliquely lateral areola, and subtended Ijy navicular 

 bracts, which are more or less deciduous in age. — Dracopis, Cass., DC. &c. 



' R. amplexicaulis, Vahl. a foot or two high from an annual root, smooth and glabrous, 

 somewhat glaucous, leafy ; the branches terminated by solitary rather showy heads : leaves 

 stricth- one-ribbed, reticulate-veiny, from entire to sparingly serrate; low-er oblong-.-])atulate 

 and sessile bv a tapering base ; upper oblong and ovate with cordate-clasping base, involucre 

 of a few small foliaceous I .raits : rays oblong, half-inch or more long, yeUow, often with i 

 brown-purple base, disk brow-nish, cylindraceous in age: receptacle slender: akenes small, 

 minutely rugnhi~e-roughened transAer.-ely between the sulcate strite. — Act. Hafn. ii. 29, 

 t. 4 (179.3) ; Sclikuhr, Handb. t. 259; Pursli, FL ii. 573. 7^. amplejifulia. Jacq. Ic. Rar iii. 

 t. 592 (1793). R. perfoliata, Cav. Ic. t. 252. R. spathulata, Xutt. Gen. ii. 17S (exch hab,), 

 not Jlichx. Dracopis amplexicaulis, Cass. Diet. xxxv. 273; DC. Prodr. ». 558; Torr. & 

 Gray, Fl. ii. 316. — Low grounds, Louisiana and Texas. (Adj. ^Nlex.) 



96. LfiPACHYS, Raf. (Ae?rt<r, a scale, and raxv?. thick, (he upper part 

 of the bracts of the receptacle thickened.) — Herbs (Atlantic N. American) ; with 

 pinnately divided or parted alternate leaves, and terminal long-ped uncled showy 

 heads, the drooping rays mostly broad, yellow or partly brown-purple ; the disk 

 at first cjrayish. the truncate inflexed tips of the chaff cane.sceiitly pubescent; 

 disk-corollas yellowish turning fuscous. Heads redolent with anisate odor when 

 bruised. Chaffy bracts commonly marked with an intra-marginal purple Ime or 

 spot, containing volatile oil or resin. Fl. summer. — Less. Syn. 22.J ; Torr. & 

 Gray. Fl. ii. 313. Lepackys & Eatihida, Raf. in Jour. Phys. 1819, 100. Obelis- 

 caria, Cass. Diet. xlvi. 401 (182.5) ; DC. Prodr. v. 558. 



§ 1. Akenes with convex or obscurely angled faces: root perennial. — Obelis- 



caria, Cass. 



* Sivk-tips lanceolate-subulate: ra^-s large and long. 



S L. pinnata Torr. & Gray, 1. c. Strigulose-pubescent and scabrous, 3 to 5 feet high, 

 'slender ; leaves 3-7-foliolate, and the leaflets lanceolate or broader, usually sparsely serrate, 

 sometimes lobed, the uppermost commonly confluent : rays pui-e yellow, oblong-lanceolate, 



