EXERCISES 



335 



Short-awned or awn-pointed 



Small, dark brown seeds, very rough near tip. . .Crested Dog's-Tail 



% inch long, smooth, light colored Wheat-Grass 



% inch or less in length Orchard-Grass 



Author's "Examining and Grading Grains," published by Ginn & Co. 



FIG. 143. Crested dog's tail: FIG. 144 Orchard grass: A, magni 



A, magnified seeds ; B, natural size. fied seeds; B, natural size. 



Author's " Examining and Grading Grains," published by Ginn & Co. 



FIG. 145. Wheat grass: A, magni- FIG. 146. Brome-grass: A, magni- 



fied seeds; B, natural size. fied seeds; B, natural size. 



Awnless 



% inch long or thereabouts, nerves very prominent .. .Brome- Grass 



About % inch long f Note difference in shape "I .Perennial Rye-Grass 



light brown . . . . \ and size of rachilla / Meadow Fescue 



