Lcpachys. COMPOSIT^E. 263 



R. heteroph^lla, Torr. & Gray. Cinereous-pubescent : stem 2 to 4 feet high, slender, 



beiiriiig sevcrivl somewhat corymbose short-peduucled small heads • leaves coarsely and 



rather obtusely serrate; some of the radical cordate-obicular and undivided, others with 



3 ovate undivided leaflets, the terminal petiolnlate , lower cauline 3-5-parted ; upper all ovate, 



coarsely 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, Middle Florida, Chapman. 



-{— -f— Eaj-s wholly wanting: proper tube of disk-corollas very short: disk brownisli, from ovoid 



tocohunnar; its chaffy bracts puberulent at tip: receptacle bodkin-shai>ed: akencs rather iarge: 



sca)-ious cupulate-coronifonn pappus very conspicuous: stem stout, neariy simple, 2 or 3 feet 



high: involucre foliaceous, variable. — § Acosinia, Nutt. 



R. OCCidentalis, Nutt. Nearly glabrous and smooth, or somewhat scabrous-pulierulent : 

 lea\es uudiviaed, ovate or ovate-lanceolate, acuminate, entire or irregularly and sparingly 

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

 contracted into a short winge<l 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. 3.55 ; 

 Torr. & Graj', 1, c. — Woods along streams, Rocky Mountains of Wyoming to Idaho and 

 Oregon; fir.st. coll. by Nat toll. Sierra Nevfida in Butte Co., California {Bui well), &c. 



R. montana. Gray. Smoother, somewhat glaucous, tall and very stout: leaves (8 to 12 

 inches long) pinnately parted into 3 to 9 oblong-lanceolate divisions, or tlie lanceolate upper- 

 most cauline with 2 to 4 narrow lateral lobes : disk cylindraceous or cylindrical, at length 

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

 lines long. — Proc. Am. Acad. xvii. 217. — Kocky Mountains of Colorado, E. Hull, Brande- 

 (jee, the latter in the Elk INIountains. 



§ 2. Dracopis. Akenes nearly terete, not angled, minutely striate, destitute 

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

 liracts, which are more or less deciduotis in age. — Dracopis, Cass., DC, &c. 



R. amplexicaulis, Vaiil. A foot or two high from an annual root, smooth and glabrous, 

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

 strictly one-ribbed, reticulate-vein^', from entire to sparingly serrate; lower oblong-sjiatulate 

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

 of a few small foliaceous bracts : rays oblong, half-inch or more long, yellow, often with a 

 brown-pur]jle base : disk l)rownish, cylindraceous in age : receptacle slender : akenes small, 

 minutely rugulose-roughened transversely between the sulcate stria;. — Act. Hafn. ii. 29, 

 t. 4 (1793) ; Sclikuhr, Handb. t. 259; Pursh, Fl. ii. 573. R. ample.rifolia, Jacq. Ic. Ear iii. 

 t. 592 (1793). R. perfuliata, Cav. Ic. t. 252. R. sjiafhulatn, Nutt. Gen. ii. 178 (excl. hab.), 

 not Michx. Dracojns amjtlexicaiiJis, Cass. Hict. xxxv. 273; DC. Prodr. v. 558; Torr. & 

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



96. LiEPACHYS, Raf. (AcTrt?, a scale, and Tru^i'?, thick, the upper part 

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

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

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

 at first grayish, the truncate inflexed tips of the chaff canescently jiubescent ; 

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

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

 spot, containing volatile oil or resin. Fl. summer. — Less. Syn. 225 ; Torr. & 

 (iray, Fl. ii. 313. Lepachys & Ratihida, Raf. in Jour. Phys. 1819, 100. Obelis- 

 caria, Cass. Diet. xlvi. 401 (1825) ; DC. Prodr. v. 558. 



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



caria, Cass. 



* Style-tips lanceolate-subulate : rays large and long. 



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 s(?rrate, 

 sometimes lobed, the uppermost commonly confluent : rays pure yellow, oblong-lanceolate. 



