138 



Fig. 434. Stipa coronata Thurber, in Brewer & S. Wats. Bot. 

 Calif. 2 : 287. 1880. Crested Feather-grass. — A stout, erect 

 perennial 12 to 18 dm. high, with flat leaves, the lower ones often 

 9 dm. long, and erect, narrow, and rather densely flowered pan- 

 icles 3 to 4 dm. long. Spikelets with unequal, acuminate-pointed 

 empty glumes (a), the lower one about 16 mm. long, and silky- 

 hairy flowering glumes (b), which have a crown of longer (4 mm.) 

 hairs. Awn slender, about 2 cm. long. — Sandy plains and hill- 

 sides, Arizona and California. March-September. 



