286 



Fig. 582. Bromus hookerianus Thurb. in Bot. Wilkes Expl. 

 Exped. 2:493. 1874. {Ceralocliloa grandi 'flora Hook. Flor. Bor. 

 Am. 2 : 253. 1840.) Great Western Brome.— A stout, erectper- 

 ennial 3 to 12 dm. high, with pubescent or hirsute sheaths and 

 leaves and nearly simple, lax panicles 20 to 35 cm. long. Spike- 

 lets 35 to 50 mm. long, 9- to 13-fiowered, strongly compressed, 

 scabrid-pubescent, with sharply acuminate-pointed empty glumes 

 and 9-nerved, short-awncd dowering glumes; these more remote, 

 less compressed, and much longer awnedthan in B. ureviaristatus. — 

 California to Washington, and eastward to Montana. 



