54 



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



32. Bromus sterilis L. (Fig. 49.) Resembling B. rigidus, less 

 robust; culms 50 to 100 cm tall; sheaths pubescent; panicle 10 to 20 



Figure 49.— Bromus sterilis, X I. (Boettcher 2423, D.C.) 



cm long, the branches drooping; spikelets 2.5 to 3.5 cm long, 

 10-flowered; glumes lanceolate-subulate, the first about 8 mm 

 lemmas 17 to 20 mm long, sca- 

 brous or scabrous-pubescent, the 

 teeth 2 mm long; awn 2 to 3 cm 

 long. O — Fields and waste 

 places, introduced in a few locali- 

 ties from British Columbia to Cali- 

 fornia and Colorado, and the East- 

 ern States from New England and 

 Illinois to Virginia and Alabama 

 (fig. 50). 



6- to 

 long; 



Figure 50. — Distribution of Bromus sterilis. 



33. Bromus rubens L. Fox- 

 tail chess. (Fig. 51.) Culms 15 

 to 40 cm tall, puberulent below 

 the panicle; sheaths and blades 

 pubescent; panicle erect, compact, 

 ovoid, usually 4 to 8 cm long, 

 usually purplish ; spikelets 4- to 11- 

 flowered, about 2.5 cm long; first 

 glume 7 to 9 mm long, the second 

 10 to 12 mm long; lemmas, sca- 

 brous, 12 to 16 mm long, the teeth 

 4 to 5 mm long; awn 18 to 22 mm 

 long, somewhat spreading afc maturity. O -Dry hills and in 

 waste or cultivated ground, Washington to southern California, very 

 abundant over extensive areas, and east to Utah and Arizona; 

 Massachusetts (fig. 52), 



Figure 51. — Bromus rubens, X 1. 

 (Blankenship 36, Calif.) 



