8 



Descriptions of the Weed-seeds Illustrated on Opposite 



Page. 



10. Bladder Campion. About one-sixteenth of an inch in length ; 

 kidney-shaped ; surface roughened by many little projections arranged 

 more or less in concentric rows ; light brown in color. 



11. White Cockle. Resembling Bladder Campion, but lighter in 

 color; roundish and not so angular ; depression about .scar not so well 

 marked. 



12. Night Flowering Catchfly. Resembles white cockle. 



13. Pepper-Grass. About one-sixteenth of an inch in length ; 

 egg-shaped but much flattened ; the groDve is curved and quite evi- 

 dent ; the scar is white ; reddish yellow to reddish brown. 



14. Penny Cress. Seeds one-twelfth of an inch long ; somewhat 

 egg-shaped and flattened ; surfaces have 12-14 curved ridges, which 

 start and end at the pointed end of the seed ; color dark reddish brown. 



15. JVild Mustard. One-sixteenth of an inch in diameter; dark 

 brown to reddish brown in color ; almost spherical in outline, 



16. Worm Seed Mustard. About one-twenty-fourth of an inch in 

 length ; most are pointed at the end opposite the scar ; the groove is 

 quite evident ; surfaces smooth and dull ; reddish yellow in color. 



17. Shejjherd's Purse. About one-twentieth of an inch in length ; 

 somewhat flattened ; oval ; each face has two grooves ; color reddish 

 yellow. 



18. False Flax. Reddish brown ; more or less oval and slightly 

 flattened ; about one-twentieth of an inch long ; the groove more 

 evident on one face than on the other ; a whitish scar at one end. 



19. Field Bindiueed. About one-sixth of an inch long; oval; 

 color dark brown ; surface is somewhat roughened ; outer face convex; 

 inner face divided by a ridge into two plane faces 



20. Dodder. Ranging from one-sixteenth to one-twenty-fourth 

 of an inch in length ; slightly egg-shaped and flattened ; notched near 

 one end ; resembles clover seed ; color is yellow to dark brown and 

 reddish. 



21. Bound's Tongue. Seeds are spiny nutlets, one eighth of an 

 inch long ; upper side flat, oblique and roughened with hooked 

 pricklfes. 



