SEEDS AND SEEDING 



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FIG. 6. Noxious weed seeds found in farm seeds (No. 1) : a, Sand 

 bur ; b, wild oat ; c, chess ; d, darnel ; e, quack-grass ; f, dock ; g, black 

 bindweed ; h, Russian thistle ; i, corn cockle ; j, white campion ; k, blad- 

 der campion; 1, night-flowering catchfly; m, cow cockle; n, pennycress ; 

 o, field peppergrass ; p, large-fruited false flax ; q, small-fruited false flax ; 

 r, ball mustard ; s, black mustard ; t, English charlock. 



