INDEX TO CHAPTER VII 



1. Tall Crowfoot, or Buttercups 20. 



{^Ranunculus acris), yellow. 



2. Bulbous Crowfoot, or Buttercups 21. 



{Ranunculus biilbostts), yel- 22. 

 low. 



3. Celandine (Chelidonium tnajus), 23. 



yellow. 



4. Hedge-mustard {Sisymbrium 24. 



officinale), pale yellow. 



5. White Mustard {Brassica, or 25. 



Sinapis, alba), yellow. 



6. Black Mustard (Brassica, or 26. 



Sinapis, nigra), yellow. 27. 



7. Shepherd's-purse {C ap s ella, 



Bursa-pastoris)i white. 28. 



8. Wild Peppergrass (Z^/?V« ?< w 



P^ii-ginicum). white. 29. 



g. Corn-cockle {Lychnis Githago), 



deep crimson. 30. 



10. Evening Lychnis {Lychnis ves- 



pertina), white or pink. 31. 



11. Red Lychnis {Lychnis diurna'), 



red. 32. 



12. Thyme-leaved .Sandwort {A}-e 



naria setpylli folia'), white. 33. 



13. Common Chick weed {^Stellaria 34. 



media), white. 



14. Long -leaved Stitchwort (Stel- 



laria longifolid), white. 35. 



15. Corn-spurrey {Spergula a^i'cn- 



sis), white. 1 36. 



16. Common Purslane {Portulaca 37. 



olcracca), light yellow. | 38. 



17. Common St. John's -wort {ILy-\ 



pericum perforatum), bright 39. 

 yellow. 



18. Common Mallow {Malva rotun- , 40. 



di folia'), white. 



19. Sida spinosa, yellow. I 



Yellow Melilot. Sweet Clovei 

 {Melilotus officinalis), yellow. 



White '\\(t\\\o{{Melilotus alba). 



Black Medick {ALedicago lupu- 

 Una), yellow. 



Alfalfa {Medicago saliva), pur- 

 ple. 



Rabbit - foot or Stone Clover 

 ( Trifolium arvense), gray. 



Yellow or Hop Clover ( Trifo- 

 lium agrarium), yellow. 



Trifolium procumbens, yellow. 



Vetch. Tare {Vicia sativa), 

 light purple. 



Carpet-weed {Mollugo verticil- 

 lata), white. 



Wild Carrot {Daucus Carota), 

 white. 



Fool's - parsley {Acllnisa Cyna- 

 pium), white. 



Bitter- weed. Fleabane (^Erige- 

 ron Canadensis), white. 



Daisy Fleabane. Sweet Scabi- 

 ous {Erigeron annuus), white. 



Erigeron strigosus, white. 



Common Ragweed. Bitterweed 

 {A mbrosia artimisiae folia), 

 green. 



Spiny Cocklebur {Xanthium 

 spinas tim), greenish yellow. 



Xanthium strumarium . 



Xanthium Canadense. 



Purple Cone- flower {Rudbeckia 

 hirta). yellow. 



Galinsoga parznflora, greenish 

 yellow. 



White weed. Ox-eye Daisy. 

 White D^y {Chrysanthemum 

 Leucantliemum), white. 



