SEEDS AND SEEDING 



79 



FIG. 7. Noxious weed seeds found in farm seeds (No. 2) : a, Indian 

 mustard ; b, hare's-ear mustard ; c, tumbling mustard ; d, wild carrot ; 

 e, field bindweed ; f , flax dodder ; g, clover dodder ; h, small-seeded 

 alfalfa dodder ; i, field dodder ; j, large-seeded alfalfa dodder ; k, corn 

 gromwell ; 1, rat-tail plantain ; m, buckhorn ; n, ragweed ; o, gumweed ; 

 p, wild sunflower ; q, oxeye-daisy ; r, Canada thistle ; s, bull thistle ; 

 t, wild chicory. 



