160 



Fig. 456. Sporobolus cryptandrus (Ton.) A. Gray, Man. 576. 

 1848. {A{/ro8tis cryptandra Torr.) Saxd Rush-grass. An erect, 

 glabrous, ctvspitose perennial, 4 to 7 dm. high, with flat leaves 6 

 to 12 cm. long, and open panicles 12 to 20 cm. long. Spikelets 2 

 to 3 mm. long. Sandy soil, Massachusetts aud Pennsylvania, 

 westward to Montana and Washington, southward to Texas and 

 New Mexico. [Mexico.] .June-September. 



