Testing Farm Seeds. 



:3C 



a distinct network of fine ridges; taste not pungent: occurring chiefly in seec 

 of cereals, millets and flax; common in imported flax seed; sometimes mixed 

 with rape seed. 



Hare's-ear mustard seeds (fig. i8, b) are oblong, surface granular, dark 

 brown, and if placed in water develop mucilage which forms whitish project- 

 ing points over the surface on drying; common in seed of cereals, millets and 





f/'''>i ii;Wv\ ®-«SjiH ' -^ ' ) 



fl ^'Wm Vim '•■^' 



q r s t ^^v 



Fig. 18. — Noxious weed seeds found in farm seeds (No. 2) : a, Indian mustard; * 

 hare's-ear mustard; c, tumbling mustard; d, wild carrot; e, field bindweed; i 

 flax dodder; g, clover dodder; U, small-seeded alfalfa dodder; i, field dodder 

 j, large-seeded alfalfa dodder; k, corn gromwell ; 1, rat-tail plantain; m, buck 

 horn ; n, ragweed ; o, gumweed ; p, wild sunflower ; q, oxeye daisy ; r, Canadi 

 thistle; s, bull thistle; t, wild chicory. (Enlarged and natural size.) 



flax; often in imported seed. This is an objectionable weed of the Northern 

 States. 



