INDEX TO CHAPTER I 



1. Small-flowered Crowfoot (Ra- 



nunculus abortivus), pale yel- 

 low. 



2. Wild Monkshood (Aconitum 



uncinatum) , blue-purple. 



3. Worm-seed Mustard (£?3'J'2»2«;« 



cheiranthoides), yellow. 



4. Cut-leaved Toothwort (Dentaria 



laciniata), pale purple or near- 

 ly white. 



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



ciwi Ascyron)^ yellow. 



6. Jewel-weed. Balsam. Touch- 



me-not (Impatiens pallida), 

 yellow. Impatiens fulva. 



7. Ditch Stone - crop {Penthorum 



sedoides), yellow. 



8. Tillaea simplex, greenish white. 

 g. Meadow Parsnip ( Thaspiuin 



barbinode'), yellow, 



10. Great Angelica (^Angelica atro- 



purpurea), greenish white. 



11. Northern Bedstraw (Galium bo- 



reale), white. 



12. Lance-leaved Golden-rod (Soli- 



dago lanceolatd), yellow. 



13. Great Ragweed (Ambrosia tri- 



fida), green. 



14. Ten - rayed Sunflower {Helian- 



thus decapetalus), yellow. 



15. Autumn Sneezeweed (Helenium 



autumnale), yellow. 



16. Coltsfoot ( Tussilago Farfard), 



yellow. 



17. Cardinal Flower (^Lobelia cardi- 



nalis), red. 



18. Water - Lobelia (Lobelia Dort- 



manna), pale blue. 



39. Virginia Cowslip (Mer 



19. Lobelia Canbyi, deep blue. 



20. Brookweed. Water Pimpernel 



(Samolus Valerandi), white. 



21. Forget-me-not (Myosoiis laxd), 



blue. M.palustris. M. ver- 

 na. 



22. Water Speedwell ( Veronica ana- 



gallisY, blue. American 

 Brooklime ( V. Ameiicand). 



23. Mudwort (Limosella aquatica), 



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. 



22. Mild Water-pepper (Polygonum 

 hydropiperoides), pale pink. 



33. Common Smartweed (Polygo- 



num hydropiper), greenish. 



34. Water Smartweed (Polygonum 



cure), white or purplish. 



35. Great Solomon's Seal (Polygona- 



ium giganteum), greenish yel- 

 low. 



36. Sweet - flag (Acorus Calamus), 



yellowish green. 



37. Water-plantain (Alisma Planta- 



go), white. 



38. Arrow -he.id (Sagittaria varia- 



bilis), white. 

 ■tensia Virginica), deep blue. 



