OBSERVATIONS ON THE COMPOSITE. 95 



species by the appressed and strigose pubescence of the 

 foliage and inTolucre; the leaves ascending, not spreading, 

 and not more than cuneately narrowed below: outer pappus 

 setose-squamellate.— Rocky Mountain region, from Colorado 

 to Manitoba and Assiniboia. 



12. G. HISPID A, Nutt. Trans, Am. Phil. Soc. vii. 316 (1840). 



Hook 



Vll. 



279. Definitely distinguishable by the harsher and 

 always spreading pubescence, spreading leaves more nar- 

 rowed at base, and obtusish at apex; corymb ampler: outer 

 pappus more copious and more distinctly paleaceous.— From 

 Iowa and Minnesota to the crest of the Californian Sierra. 



13. C. Columbiana. Leaves few, scattered, spreading or 

 deflexed : pubescence of both stem and foliage white, spread- 

 ing and hispidulous: corymb loose, of few pedunculate heads: 

 outer pappus rather copious but unequal, rather setose than 

 squamellate. — Spencer's Bridge, British Columbia, 1881, 

 collected by John Macoun. 



14. C. MOLLIS, Nutt. Trans. Am. Phil. Soc. vii. 316 (1840) : 

 Torr. & Gray, PI. ii. 255 (1842). Habit of C. hispida, but 

 no rough or spreading pubescence; the whole plant softly 

 silky, the pubescence appressed: leaves oblong, sessile: outer 

 pappus minute.— Valley of the upper Platte, in the Rocky 

 Mountains. 



15. C. FOLiosA, Nutt. 1. c. Stoutish, and very leafy up to 

 the rather dense cluster of few large heads: pubescence 

 canescently silky and with a thinner coat of long villous 

 hairs: leaves oblong or elliptic sessile, often very distinctly 

 f eather- veined : achenes very silky; outer pappus setose. An 

 excellent species, very common at middle elevations in the 

 Colorado Rocky Mountains. 



16. C. pnraila. Stems tufted, slender, 3 to 6 inches high, 

 sparingly leafy below; the foliage mostly toward the summit 

 and closely subtending the solitary sessile head: leaves 1^ 

 inches long, narrowly oblanceolate, tapering to a slender 



