178 



Fig. 160. Trisetum subspicatum (L.) Benuv, (Aira suhspicata 

 L.). DoWNV OvT-(ii;Ass. — A sleiidiT, erect ])ereunial 1.") to 4.5 

 dm. liigh, with usually downy cnlms and leaves and densely 

 many-tlowered, spike-like panicles. — M'idely distributed in the 

 cooler teni])(!rate reu,ion8 of both hemispheres, ranging in North 

 America from Labrador to Alaska and extending southward in the 

 Eastern States to tlie mountains of North Carolina and Tennes- 

 see, and in the West to New Mexico and California. June-Sep- 

 tember. 



