ELEVENTH ANNUAL YEAR BOOK— PART XI 



735 



Sedge seeds (fig. 19, g) when covered by the chaffy hull are flask 

 shaped, straw colored, brown, or greenish, flattened and thin with respect 

 to the several kinds found in farm seeds; seeds freed from the outer 

 chaff are oval, lens shaped, and light brown; common in grass seeds, 

 particularly bluegrass seed; plants comparatively unimportant. 



2fW- 



Fig:. 19. — Other weed seeds commonly found in farm seeds (No. 1); a, Crab- 

 grass; b, witch-grass; e, yellow foxtail; d, green foxtail; e, velvet grass; f, 

 soft chess: g, sedge; h, sorrel; i, knot-weed; j, pale knot-weed; k, lady's- 

 thumb; I, lamb-quarters; m, wild saltbush; n, rough amaranth; o, spread- 

 ing amaranth: p, wild spurry; q, and r, chickweed; s, mouse-ear chick- 

 weed; t, forked catchfly. (Enlarged and natural size.) 



