175 



FlG. 157. Deschampsia calycina Presl (Aira danthonioides 

 Trin.). Oat-like Hair-GRASS. — A rather slender, erect, caespitose 

 grass from 1 to 7 dm. high, with more or less spreading panicles. — 

 Native along the Pacific Slope from Canada to California, east- 

 ward to Utah, and southward through Mexico to Peru. April- 

 July. 



