COLORADO WILD FLOWERS 



29 



finish their growth and mature their seeds before the hot, dry months 

 of July and August. 



The limits of the present discussion do not permit any detailed account 

 of these plants. Only three examples are chosen for illustration, the 

 sand lily, prickly poppy and evening primrose, while at least fifty hand- 



Fig. 29. — Snow Drifts in a Sub-alpine Forest 

 These large drifts are located north-east of a ridge which serves as a protection from 

 the heat of the sun. Many large drifts remain in the shelter of ridges or under trees well 

 into June and July. 



'some and abundant flowers could be named. But it is worth while to 

 call attention to the beauty of springtime on the plains so that those who 

 can may make the most of this beauty. In addition to sand lilies and 

 evening primroses there are milk vetches, multi-colored loco weeds 

 and the^brilliant yellow buck beans (Thermopsis). Grotesque prickly 

 pears and other cactuses, so abundant in many places, take on a brighter 



