CIRCULAR 558, U. S. DEPARTMENT OF AGRICULTURE 
FicurEe 1.—Seed of Canada wild-rye (Elymus canadensis) before (A) and after 
(B) it was processed. The awns are stiff, long, and curved and make up a 
considerable proportion of the weight of the seed. 
Figure 2.—Seed of a commercial lot of tall oatgrass (Arrhenatherum elatius) 
before (A) and after (B) it was processed to remove the awns. About 85 per- 
cent of the seed in B is deawned and a considerable portion is hulled, but it 
can be easily planted with ordinary machinery and is of superior quality. 
