294 Carduaceae 



In open stony or more or less grassy 



ground at the high altitudes; flowering 

 during July. 



Erigeron More or less hairy, varying to 



acris L smooth, 3-18 inches high, simple 



Blue or branching. Leaves spatu- 

 Fleabane. 



inches long, hairy and entire. Heads \ of an 

 inch or more broad, single or several, more or 

 less paniculately disposed; involucre hemi- 

 spheric, its bracts linear and hairy; rays 

 numerous, very narrow, only slightly ex- 

 ceeding the yellow disc, blue or purple. 



In dry stony ground and slopes throughout 

 the region, very variable as to size ; flowering 

 during July. 



Erigeron Nearly or quite smooth, 1-2 

 drobrachi- feet high, usually paniculately 

 ensis O. , branched. Leaves spatulate 

 to lanceolate, acute, rather nu- 

 merous. Heads on peduncle-like branches, 

 an inch or more long, involucre, J of an inch 

 or more broad, scales narrowly lanceolate, 



