ROCK WORMWOOD 



Artemisia discolor Douglas 



The wormwoods all have a pungent odor, especially when the 

 leaves and flowers are crushed. Rock wormwood grows among 

 the loose stones of steep rock slides. The plants are so nearly the 

 color of their rock surroundings that they are easily overlooked. 

 The wormwoods belong to the vast Aster Family, and to the sub- 

 division that includes the oxeye daisy and yarrow. 



Rock wormwood has a narrow range, being found from Mon- 

 tana to Washington, and northward to British Columbia. 



The specimen sketched was obtained by the side of the rocky 

 trail under Mount Wapta, ten miles by trail from Field, British 

 Columbia, Canada, at an altitude of 6,500 icct. 



PLATE X88 



