Fig. 33. — Rydbergia (Rydbergia grandifiora) 

 This beautiful plant is named in honor of Dr. Per Axel Rydberg, the distinguished 

 author of the Flora oj Colorado. It is one of the most striking plants of the alpine zone, 

 being common in moister places in early summer. The ray flowers are a handsome 

 yellow and the center orange-brown. (Two-thirds natural size.) 



