164 



Fkt. 460. Sporobolus jonesii Vasey, Coult. Bot. Gaz. 6 : 297. 

 1881. Jones' Rush-grass. A sleuder, wiry, densely tufted, erect 

 perennial, 3 to 4.5 dm. high, with nnnierons short, rigid, involute 

 radical leaves, and more or less spreading panicles 3 to 6 dm. 

 long. Spikelets about 3 mm. long, with nearly truncate, or erose- 

 dentatc empty glumes (a, c, d) which arc one-third to oiie-lialf as 

 long as the acmte flowering glume. Soda Springs, near Summit, 

 California. July. 



