Carduaceae 299 



except the hairy-fringed margins, thin, dis- 

 tantly serrate or subentire, tapering into 

 wing- margined petioles, oblanceolate-acute, 

 4-8 inches long; the upper oblong or lan- 

 ceolate sessile. Heads about \ an inch high, 

 J-f of an inch in diameter, rather few in 

 an open panicle; involucral bracts linear, 

 fringed with hairs on the margins, the upper 

 part ' foliaceous and the outer somewhat 

 spreading; rays numerous \ an inch long, 

 light-blue. 



In moist, more or less shaded places, edges 

 of woods and thickets, throughout the 

 Rockies; flowering in late July and August. 



Simple, stem smooth, with spar- 



Aster ing, erect, flowering branches, 



frondeus 



(\ Gray) Leaves few, broadly lanceolate 



Greene. to oblong or spatulate, entire 



Leafy- or nearly so, the lower tapering 



bract* . ^ w i n ged petioles. Heads soli- 



Aster 



tary or few, on naked peduncles ; 



involucre J of an inch high, or less; bracts 

 linear-lanceolate, loose, all equalling the disc; 



