HOW TO KNOW THE GRASSES 



77b. Lemmas bearing awns 5 — 15 mm. long. Fig. 113. 



MOUNTAIN BROME Bromus carinatus H. & A. 



Annual or biennial; tufted; plants 50 — 100 cm. 

 tall or taller, vigorous and leafy; panicles 15 — 30 

 cm. long, with spreading or drooping branches; 

 sheaths and leaf blades smooth or hairy; blades 

 ranging from narrow and involute to broad and 

 flat. A number of closely related and intergrad- 

 31 ing plants, sometimes recognized as separate spe- 



cies, are included here. These plants are com- 

 mon on open ground and in thin woods in the 

 western states and furnish a good deal of range 

 forage. The foliage and the seed heads are eaten, 

 the latter furnishing a good fattening ration for 

 lambs. The seed of these plants is now available 

 in commerce and the plants are used for range re- 

 vegetation in the West. March — Jime. 



Figure 1 13 



78a. Lemmas broad, rounded or tapered to the apex, the lateral teeth 

 at the base of the awn not long and sharp 79 



78b. Lemmas narrow, with a hard, sharp callus and long, sharp lateral 

 teeth at the base of the awn 91 



79a. First glume 1 -nerved, narrowly lanceolate. 



80 



79b. First glume 3 — 5-nerved, ovate or elliptical 84 



80a. Plants tufted, without rhizomes; panicles mostly drooping; lemmas 

 bearing well developed owns 81 



60 



