22J~\ FLORA OF BOULDER, COLORADO 79 



174. E. ambiguus Vasey & Scribn. Ambiguous lyme grass. 

 Common on the foothills and mountainsides, 5900-9000 ft. 



(Daniels, 158). 

 Colorado. 



175. E. strigosus Rydb. Strigose lyme grass. 



Common on the foothills and mountain ridges, 6000-8600 

 ft. (Daniels, 962). Boulder is the type locality. 

 Wyoming to Colorado. 



176. E. villiflorus Rydb. Villous lyme grass. 



Common on the foothills; occasional on the plains and 

 mesas, 5100-8000 ft. (Daniels, 963) Boulder is the type 

 locality. 



South Dakota and the Canadian Rockies to Colorado. 



Family 13. CYPERACEAE J. St. Hil. Galingale family. 



78. CYPERUS L. Galingale. 



177. C. inilexus Muhl. [C. aristatus Boeckl.]. Awned cy- 

 per grass. 



Scarce on the plains and foothills in moist sands, 5100- 

 6500 ft. (Daniels, 253). 



Vermont to British Columbia; Florida to California 

 and Mexico. 



178. C. Bristol Britt. Bush's cyper grass. 



In sandy soil at Meadow Park, 6500 ft. (Rydberg). 

 Wisconsin to Oregon; Kansas to Colorado. 



79. SCIRPUS L. Bulrush. 



179. S. Americanus Pers. [S. pungens Vahl.]. Three 

 square. 



In swales, along ditches and streams, and at the margins 

 of ponds and lakes, but apparently not following the streams 

 very far into the foothills, 5100-6500 ft. (Daniels, 668). 



North America: Chili: Europe. 



