Carduacese 305 



high; involucral bracts, 12-15, lanceolate, 

 acuminate, glandular-hairy as are also the 

 seeds ; pappus white ; rays about f of an inch 

 long, narrow, bright yellow with a single 

 notch at the apex. 



On alpine slopes throughout the Rockies ; 

 flowering in July, not common. 



Minutely hairy or nearly smooth, 

 Arnica lati- 



folia Bong simple or branched. Leaves 

 Broad- thin, nearly smooth, or with 



leaved long scattered hairs; the lower 



Arnica. 1 



cordate ; stem leaves in 2-3 pairs, 



e'qual, ovate or oval, sharply dentate, closely 

 sessile by the broad base, or the lowest with 

 contracted bases. Heads } of an inch high 

 on long, slender, hairy peduncles ; involucral 

 bracts \ an inch or more long; oblong-lan- 

 ceolate, acuminate, with scattered hairs, rays 

 yellow, } of an inch long, with 2 notches at the 

 apex; achenes nearly smooth; pappus white. 

 Throughout the region in woods and open 

 ground usually at an elevation of 5000 to 

 7000 feet; flowering during July. 



