48 Addisonia 



variants seems to have succeeded in detaching itself very success- 

 fully from the controlling individuality of the true plant which 

 blends all together into one general species. 



This is an an aster mainly of dry open ground, sometimes group- 

 ing itself closely on sandy levels, but more often of freer growth along 

 fields and woodsides or, among inland hills, scattered, as the soil 

 may permit, along stony roadside banks. 



In the east its distribution extends from Pennsylvania and New 

 Jersey to the coast region of New York and on through New England 

 into Maine; thence it ranges to Ontario, and far towards the north- 

 west, and south, it is said, to New Mexico and Louisiana. 



E. P. BlCKNELL. 



Explanation of Plate. Fig. 1. — Portion of flowering stem. Fig. 2. — In- 

 volucre, X 2. Fig. 3. — Lower leaf. 



