398 COMPOSITAE CEEPis 



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

 larly acaiilescent, the corymbosely panicled stout scape 13 to 18 inches 

 high, rather strongly hispid and somewhat glandular : leaves depressed or 

 ascending, oval and oblong to spatulate-oblong, subsessile or short peti- 

 oled, mostly 4 to 6 inches long, often 3 in breadth, obtuse, coarsely and re- 

 motely, often somewhat runcinately toothed, green and glabrous above: 

 involucre 4 or 5 lines high, very hispid, slightly glandular : achenes dark 

 brown, oblong-fusiform, slightly contracted toward the summit, sharply 10- 

 ribbed. Moist mountain meadows of southern Idaho and northern Utah.'' 



C. siibcarnosa 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 !ong-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 else- 

 where 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- 

 pinnatifid, tapering to both ends, the apex usually into a lanceolate or 

 linear prolongation: 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, consid- 

 erably longer than the pappus, lightly striate-costate moderately at- 

 tenuate at summit. Dry ground, eastern Oregon to California, Utah 

 and Montana. 



C. intermedia Gray Syn. Fl. i pt 2, 433. 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 both ends, involucre half-inch or 

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

 of vthe 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 Mountains. 



C. occidentalis Nutt. Journ. Acad. Phikd. 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, cylindraoeous, 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 glanduhferous hairs : stems stout, usually solitary, 

 freely branching, 6-13 inches high : leaves oblong to broadly lanceolate 

 in outline, 3-4 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 hillsdes, southern 

 Oregon to California. 



