ILLUSTRATIONS 



FACING PAGE 



Datura 192 



Wild Teasel 214 



Cardinal Flower 224 



Prickly Lettuce 234 



Purple Eupatorium at Home 260 



Boneset 262 



Common Burdock - . . 270 



ILLUSTRATIONS IN TEXT 



PAGE 



Common Floating Pondweed 7 



Eel-Grass Submerged 11 



Duckmeat 13 



Spiderwort 16 



Pickerel-Weed 17 



Blue Flag 27 



Fruit of Blackberry-Lily 29 



Lizard's-Tail 31 



Stinging Nettle ...,..« 34 



Pink Knotweed 37 



Climbing False Buckwheat 39 



Leaf of Common Dock 42 



Lamb's-Quarters 45 



White Campion . . . . . . 49 



Bladder Campion 51 



Yellow Pond-Lily 59 



Clematis 63 



Buttercup 67 



Spray of Tall Meadow-Rue ......... 69 



Black Mustard 72 



Leaf of Live-Forever 75 



Dalibarda . 77 



Tall Agrimony 78 



Three-Toothed White Cinquefoil 80 



Partridge-Pea 83 



Woadwaxen 85 



xxiv 



