Lepachys. COMPOSITE. 



R. heterophylla, TORR. & GRAY. Cinereous-pubescent : stem 2 to 4 foot high, slender, 

 bearing several somewhat corymbose short-peduncled small heads leaves coarsely and 

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

 3 ovate undivided leaflets, the terminal petiolulate , 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. El. 228. Swamps, Middle Florida, Chapman. 



-f -1 Rays wholly wanting : proper tube of disk-corollas very short: disk brownish, from ovoid 

 to columnar ; its chaffy bracts ptiberulent at tip : receptacle bodkin-shaped : akencs rather large : 

 scarious cupulate-coronifonn pappus very conspicuous : stem stout, neany simple, 2 or 3 feet 

 high: involucre foliaceous, variable. Aco*mia, Nutt. 



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

 leaves undivided, 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 abrupt ly 

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

 becoming inch and a half long, and akeiies 2 lines long. Trans. Am. Phil. Soc. vii. 355; 

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

 Oregon; first, coll. by Nnltall. Sierra Nevada in Butte Co., California (Bidwell), &c. 



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

 indies long) pinnately parted into 3 to 9 oblong-lanceolate divisions, or the lanceolate upper- 

 most canline with 2 to 4 narrow lateral lobes : disk cylinclraeeous or cylindrical, at length 

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

 lines long. Proc. Am. Acad. xvii. 217. Rocky Mountains of Colorado, E. Hall, Brande- 

 qee, the latter in the Elk Mountains. 



2. DRACOPIS. Akenes nearly terete, not angled, minutely striate, destitute 

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

 bracts, which are more or less deciduous in a,ge.--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 

 strictly one-ribbed, reticulate-veiny, from entire to sparingly serrate ; lower oblong-spatulate 

 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-purple base : disk brownish, cylindraceous in age: receptacle slender: akenes small, 

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

 t. 4 (179.3) ; Schkuhr, llandb. t. 259 ; Pursh, El. ii. 573. R. amplextfolia, Jacq. Ic. Rar iii. 

 t. 592 (1793). R. pcrfoliatn, Cav. Ic. t, 252. 7?. spntftn/ntii, Nutt. Gen. ii. 178 (excl. hab.), 

 not Michx. Dracopis ainplejric<t.n/is, Cass. Diet. xxxv. 273; DC. Prodr. v. 558; Torr. & 

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



96. LEPACHYS, Raf. (Ae??, a scale, and Tru^u'?, thick, Ihe upper part 

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

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

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

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

 disk-corollas yellowish turning fuscous. Heads 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. & 

 Gray, Fl. ii. 313. Lepachys & Ratilida, Raf. in Jour. Phys. 1819, 100. OMls- 

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



1. Akenes with convex or obscurely angled faces: root perennial. Obeli s- 



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 sparsrh serrate. 

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



