INDEX TO CHAPTER I 



1. Small-flowered Crowfoot {/ui- 



nuncidus abortivits), pale yel- 

 low. 



2. Wild Monkshood {Aconitmu 



iiiiciiiatuiii), blue-purple. 



3. Worm-seed Mustard (£'/;i'j- /www 



cheiranthoides), yellow. 



4. Cut-leaved Toothwort {Dcntaria 



laciniala), pale purple or near- 

 ly white. 



5. Great St. John's-wort {Hyperi- 



ctim Ascyfoii), yellow. 



6. Jewel-weed. Balsam. Touch- 



me-not {^Impatiens pallida), 

 yellow. Impatiens ftilva. 



7. Ditch Stone -crop {Fcii thorn 111 



sedaidc's), yellow. 



8. Tillaea simplex, greenish white. 



9. Meadow Parsnip (7 'haspiiiin 



barbinode), yellow. 



10. Great Angelica (^Angelica afro- 



purpurea), greenish white. 



11. Northern Bedstraw {Galium bo- 



reale), white. 



12. Lance-leaved Golden-rod {Soli- 



dago lanceolata), yellow. 



13. Great Ragweed {Ambrosia tri- 



Jida), green. 



14. Ten - rayed Sunflower (^Helian- 



tluis decapetalus), yellow. 



15. Autumn Sneezeweed {Helenium 



autumnale), yellow. 



16. Coltsfoot {Tussilago Faj-fara), 



yellow. 



17. Cardinal Flower {Lobelia cardi- 



nalis), red. 



18. Water- Lobelia {f.abelia Dorl- 



manna~), pale blue. 



39 Virginia Cowslip {Merti 



19. Lobelia Canbyi, deep blue. 



20. Brookweed. Water Pimpernel 



{Samolus Valerandi), white. 



21. Forget-me-not {Myosoiis laxa), 



blue. AI. palustris. M. ver- 

 na. 

 11. Water Speedwell ( Veronica ana- 

 gallis), blue. American 

 Brooklime ( V. Ameiicana). 



23. Mudvvort {Limosella aqicatica), 



white or purplish. 



24. Herpestis Amplexicaulis, blue. 



25. Fog - fruit {Lippia lanceolata), 



bluish white. 



26. Spearmint {Mentha viridis), pale 



blue. 



27. Peppermint (^Mentha piperita). 



28. Water-mint {Mentha aquatica). 



29. Wild Mint {Mentha Canaden- 



sis). 



30. Mad-dog Skullcap {Scutellaria 



lateriflora), light blue. 



31. Scutellaria galericulata. 



32. Mild Water- pepper (/V/i'_i,^(7««;« 



hydropiperoidcs), pale pink. 



33. Common Smartweed ( Polygo- 



num hydropiper), greenish. 



34. Water Smartweed {Polygonum 



acre), white or purplish. 



35. Great Solomon's Seal {Polygona- 



tum giganteum), greenish yel- 

 low. 



36. Sweet - flag {Acorus Calamus), 



yellowish green. 



37. Water-plantain {Alisma Planta- 



go), white. 



38. Arrow-head {Sagittaria varia- 



bilis), white. 

 •n<:ia Virginica), deep blue. 



