COLORADO WILD FLOWERS 



15 



Fig. 15. — Sulphur Flower {EHogonum umbellatum) 

 This is a somewhat woolly plant with dense clusters of small sulphur-yellow flowers. 

 The plant here figured belongs chiefly to the foothills, but other species occur at high 

 altitudes, notably one with straw-colored flowers. (One-half natural size.) 



