39 



Fig. 21. Hilaria rigida (Tliurb.) Vasey; Beal, Grasses N. Am., 

 2: 68. {Pleurajjhis rigida Thurb.) Galleta.— A coarse, much- 

 branched, and woody perennial 6 dm. high, growing in great 

 clumps, somewhat resembling dwarf bamboos in habit — Deserts, 

 southern Utah to Arizona and southern California. [Lower Cali- 

 fornia.] May-July. 



