MANUAL OF THE GRASSES OF THE UNITED STATES 



51 



pilose with appressed hairs, the margin whitish; awn from below 

 the entire apex, 5 to 7 mm long; palea a little shorter than the lemma; 

 anthers 0.4 mm long, about as broad. O — Open 

 ground, southern California; introduced from Europe. 

 27. Bromus racemosus L. (Fig. 41.) Differing from 

 B. mollis in the somewhat more open panicle and gla- 

 brous or scabrous lemmas, o (Including what in 

 this country has been called B. hordeaceus glabrescens 

 Shear, B. hordeaceus var. leptostachys Beck, and B. 

 mollis f. leiostachys Fernald.) — Weed in waste places, 

 chiefly on the Pacific coast and east to Idaho, 

 Colorado, and Arizona; a few points from 

 Illinois to Maine and North Carolina (fig. 42) ; 

 Z/Ir\ introduced from Europe. 

 « 1 Bromus scoparius L. Resembling B. 

 mollijormis; culms 20 to 30 cm tall; sheaths 

 soft-pubescent; blades glabrous, scabrous or 

 sparingly pilose; panicle contracted, erect, 

 3 to 7 cm long; spikelets about 1.5 cm long, 

 3 to 4 mm wide; lemmas about 7 mm long, 

 narrow, glabrous; awn 5 to 8 mm long, finally divaricate. 

 — Introduced from Europe in California (Mariposa) 

 and Virginia (Newport News, on 

 ballast). 



Bromus macrostachys L. Annual; 



culms erect, 30 to 60 cm tall; panicle 



(Hitchcock narrow, compact, consisting of a lew 



2667, Calif.) j arge gp i]. e | ets aDO ut 3 CHI long. 



O — Wool waste, Yonkers, N.Y. Sometimes 



cultivated for ornament. Mediterranean region. FlG ™ r E m1^7attSm. tlon 



Figure 40. — Bro- 

 mus molliformis, 

 XI. (Chase 5564, 

 Calif.) 



Figure 41.— 

 Bromus rac- 

 emosus X 5 



Figure 43.— Bromus japonicus, X 1. (Deam 6833, Ind.) 



28. Bromus japonicus Thunb. Japanese chess. (Fig. 43.) 

 Culms erect or geniculate at base, 40 to 70 cm tall; sheaths and 



