io WILD FLOWERS AND TREES OF COLORADO 



autumn there are few species in blossom except such coarse plants as 

 sunflowers and their relatives. 



In mountain districts there are showers throughout the summer and 

 so there is a continuous succession of flowers. Many of the plants which 

 belong more properly to the montane zone occur also in the foothills 



Fig. io. — Pasque Flowers ("Anemones") 



where they first come into blossom. A week or two later they are in full 

 bloom in their proper habitat. A few weeks later than this, with the 

 general warming up of the summer a few specimens may be found in the 

 sub-alpine districts. ( 



Unless the differences in climate which may be recognized at 

 different altitudes are constantly kept in mind it is impossible to under- 

 stand the flora of a mountain region. With each thousand feet additional 



