8 WILD FLOWERS AND TREES OF COLORADO 



Altitude, Climate and Plant Life 

 Plants of spring and autumn are very different. Early in the year 

 many species come into blossom which require some considerable 



Fig. 8. — Broadleaf Cottonwoods along a Small Creek 

 This is a common type of scene on the great plains of eastern Colorado. Water courses ■ 

 may be recognized miles away by the presence of straggling cottonwoods. 



amount of moisture. The later-blooming flowers are those which are 

 able to withstand dryness. After June there is very little rain in the 

 plains region so that the ground becomes parched and dry. Usually in 



