THE GENERAL CHARACTERS OP SEEDS 419 



Soft Chess (Bromus hordeaceus L.). 



Flowering spikelet 7-9 mm. in length, obtuse and awned; awns 

 6-8 mm. in length ; roughened ; glume with 3 nerves on each side ; 

 glume bearing numerous hairs upon the surface ; caryopsis 5 mm. 

 long, 2 mm. wide, light brown, scar at base, extending one-third 

 length of seed. 



J** 



%L 



"• «• «. 



Figure 253B 



Fig. 253. A. Soft Chess (Bromus hordeaceus). a, b, views of enlarged seed; 



c, natural size. 

 B. Chess (Bromus secalinus). a, b, c, d, views of seed, enlarged; e, natural 



size. 

 (After Hillman.) 



Smooth Brome or Hungarian Brome Grass (Bromus inermis Leyss.). 



Empty glumes unequal; flowering glumes awnless or short- 

 awned, with broad scarious margin at obtuse or emarginate apex; 

 veins of flowering glume conspicuous, roughened ; veins of palet 

 roughened; seed flattened, boat-shaped, one-third in. in length, 

 one-twelfth in. in width. 



