398 COMPOSITE CBEPIS 



C. platyphylla Greene Pitt, iii, 27. " Related to C. runcinata, simi- 

 larly acaulescent, the corymbosely panicled stout scape 12 to 18 inches high, 

 rather strongly hispid and somewhat glandular : leaves depressed or as- 

 cending, oval and oblong to spatulate-oblong, subsessile or eho-t petioled, 

 mostly 4 to 6 inches long, often Sin breadth, obtuse, coarsely and remotely, 

 often somewhat runcinately toothed, green and glabrous above : involucre 

 4 or 5 lines high, very hispid, slightly glandular: achenes dark brown, ob- 

 long-fusiform, slightly contracted toward the summit, sharply 10-ribbed. 

 Moist mountain meadows of southern Idaho and northern Utah." 



C. subcarnosa Greene 1. c. 107. " Stout and low, more or less pubes- 

 cent, slightly succulent, the scape about a foot high, bearing at summit 

 few and long-peduncled heads: leaves of spatulate- oblanceolate outline, 

 obtuse or acutish, saliently but not runcinately toothed: peduncles and 

 involucre glandular-hispid : slender-fusiform achenes tapering ; pappus fine 

 fragile. Meadows along the Humboldt River at Deeth and elsewhere in 

 eastern Nevada, thence northward to southern Idaho." 



C. acuminata Nutt. Trans. Am. Phil. soc. vii, 437. Minutely cinere- 

 ous-pubescent below, but green: stems slender, 1-3 feet high, 1-3-leaved, 

 bearing a fastigiate or corymbiform cyme of numerous small heads : leaves 

 elongated, slender-petioled, oblong-lanceolate in outline, laciniate-pinnati- 

 fid, tapering to both ends, the apex usually into a lanceolate or linear pro- 

 longation : involucre narrow-cylindraceous, 4-6 lines long, rarely more than 

 6-flowered, of 5-8 principal bracts, glabrous, or the few minute bractlets 

 tomentulose : mature achenes fusiform, considerably longer than the pap- 

 pus, lightly striate-costate moderately attenuate at summit. Dry ground, 

 eastern Oregon to California, Utah and Montana. 



C. intermedia Gray Syn. Fl. i pt 2, 432. Cinereous puberulent : stems 

 1-2 feet high, 1-3-leaved, terminating in a rather few-flowered corymb or 

 paniculate cyme : leaves elongated, slender-petioled, oblong-lanceolate in 

 outline, laciniate-pinnatifid, tapering to loth ends, involucre half-inch or 

 more high, canescently puberulent ; its bracts in age carinate by thickening 

 of the midrib : achenes acutely 10-costate when mature, oblong-fusiform, 

 slightly attenuate upward, longer than or equalling the pappus. Eastern 

 Washington and Brit. Columbia to California and the Rocky Mauntains. 



C. occidentalis Nutt. Journ. Acad. Philad. vii, 29. Canescent with 

 a close scurfy tomentum ; stems usually 4-18 inches high, solitary or 2 or 

 3 from a single caudex, corymbosely branched above, rarely from near the 

 base, often with glandular bristly hairs above: leaves from runcinately 

 toothed to deeply pinnatifid, or somewhat bipinnatifid; the lower and rad- 

 ical 4-10 inches long, narrowed into petioles; the upper sessile and slightly 

 clasping: heads few to several, corymbosely panicled: involucre 6-8 lines 

 high, cylindraceous, its principal bracts linear and acute, with several 

 small ovate to subulate calyculate ones at their base, all canescent with 

 close minute tomentum, and often with a few short bristles : achenes fusi- 

 form, truncate at the apex, 10-18-costate. On dry plains and hillsides, 

 Brit. Columbia to California and Colorado. East of the Cascade Mountains. 



C. monticola Coville Cont. Nat. Herb, iii, 562. Crinitely pubescent 

 with long brownish glanduliferous hairs: stems stout, usually solitary, 

 freely branching, 6-12 inches high: leaves oblong to broadly lanceolate 

 in outline, 2-4 inches long, acute, narrowed below to short petioles or 

 narrow sessile base ; sometimes with merely dentate margins, sometimes 

 deeply pinnatifid with toothed or even pinnatifid lobes : involucre 8-10 

 lines high, narrow-campanulate ; its principal bracts narrowly lanceolate, 

 acuminate, nearly or quite equalling the ligules. Dry hillsides, southern 

 Oregon to California. 



C. scopnlorum Coville 1. c. 563. Scantily tomentose, usually glabrate 



