242 



Fig. 224. Cathestecum prostratum Presl (C. crecium Vasey 

 and Hack.) ; Beal, Grasses X. Am., 2 : 452. — Au extensively creep- 

 ing, slender perennial, witli upright flowering branches 1 to 3 dm. 

 high, narrow, flat leaves, and clustered spikelets in terminal or 

 lateral racemes. — Dry mesas and bluflfs along the Rio Grande, 

 western Texas. [Mexico.] July-October. 



