COMPOSIT^E. (composite FAMILY.) 183 



♦ Disk from hemispherical to ovoid, black or dull hrown : akenes small, quadran- 



gular, ivliolli/ destitute of pappus : leaves undivided : involucre soon re flexed. 



1. R. hirta, L. Rather stout, 1 to 3 feet lii<,'h, rongh-liispid ami hirsute; 

 leaves from oblong to lanceolate, sparingly serrate or Jioarly entire, 2 to 5 

 inches long, the lower narrowed into margined petioles : rays when well devel- 

 oped an inch or two long, golden yellow, sometimes deejicr c«il(tred toward 

 the base: disk at first nearly black, in ago dull brown, becoming ovoid in 

 fruit. — Dry and open ground, from Colorado to the Saskatchewan and cast- 

 ward across the continent. 



* * Disk from t/lobular to cijlnidrical, ijellowish or brownish : akenes comjKirativel 'i 



large, soineivhat compressed, icith a crown-like pappus: involucre loose and 

 foliaceous but not usualli/ refiexed. 

 •^ Rajs few or several, inch or two lon/j, drooping, pure i/eltow : disk dull ijellowish ; 

 the tip oj the chaff ij bracts canescent : pappus a short 4-toofhed or nearlj/ entire 

 crown .• nearl ji all the leaves cleft or divided : stems branching. 



2. R. laeiniata, L. Glabrous and smooth, sometimes minutely .scabrous, 

 at least on the margins and upper face of the leaves : stem 2 to 7 feet high, 

 branching above : leaves veiny, broad, incisely and sparsely .serrate ; ra^lical 

 commonly pinnately 5 to 7-foliolate or nearly so, and divisions often laciui- 

 ately 2 to 3-cleft ; lower canline 3 to 5-parted, upper 3-cleft, and those of the 

 branches few-toothed or entire — Moist ground, from Montana to Arizona 

 and New Mexico, aud eastward across the continent. 



H- ••- Rai/s wanting : disk brownish; the tip of the chaff// bracts puberiilent : re- 

 ceptacle bodkin-shaped: scanous cup-shaped pappus verg conspicuous: stems 

 stout, simple. 



3. R. oceidentalis, Nutt. Nearly glabrous and smooth, or somewhat 

 scabrous-puberiiU lit : leaves undivided, ovate or ovate-lanceolate, acuminate, 

 entire, or irregularlg and sparinglg dentate, 4 ^o 8 inches long ; upper sessile by a 

 rounded or subcordate base ; lower abruptly contracted into a short winged 

 petiole, rarely a pair of obscure lateral lobes: disk in age becoming 1.^ inch 

 long, and akenes 2 lines long. — Trans. Am. Phil. Soc. vii. 355. Mountains 

 of Wyoming to Idaho and Oregon. 



4. R. montana, Gray. Smoother, somewhat glaucous, tall and very 

 stout: leaves S to 12 inches long, pinnatelg parted into 3 to 9 oblong-lanceolate 

 divisions, or the lanceolate uppermost cauliue with 2 to 4 narrow lateral lobes : 

 disk eylindraceous or cylindrical, at length often 3 inches long and an inch in 

 diameter, akenes with the deep coroniforiu pappus 3 or 4 ///jf.s /om/. — Proc. 

 Am. Acad. xvii. 217. Mountains of Colorado. 



35. LEPACHYS, Kaf. 



Herbs, ^vith pinnately parted leaves, and terminal long-pednncled showy 

 heads, the drooping rays yellow or partly brown-purj)le : truncate inllcxod tips 

 of the chaff pubescent, disk yellowish, becoming darker. 



1. L. COlumnaris, Torr. & Gray. Scabnms, 1 or 2 feet high, branching 

 from the ba.se : divisions of the cauline leaves v> to 9. from oblonu to narrowly 

 lineaV, sometimes 2 to 3-cleft : rays commonlv an im-h or more Ion;:, normally 



