34 



MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



1. Bromus catharticus Vahl. Res- much as 100 cm. tall; sheaths gla- 

 cue grass. (Fig. 3.) Annual or bi- brous or pubescent; blades narrow, 

 ennial; culms erect to spreading, as glabrous or sparsely pilose; panicle 



Figure 3. — Bromus catharticus, X 1. (Peebles, Harrison, and Kearney 1271, Ariz.) 



Figure 4. — Bromus sitchensis, X 1. (Piper 3013, Alaska.) 



