ILLUSTRATIONS 



FACING PAGE 



Fringed Gentian at Home 98 



Closed Gentian 100 



Grass of Parnassus 104 



Ladies* Tresses 108 



Wild Hop no 



Butter-and-Eggs . . 116 



Mayweed 156 



Milkweed Seeding Itself 160 



.Smooth Winterberry 164 



Greenbrier 166 



Jack-in-the-Pulpit 168 



White Baneberry 170 



Elm 178 



Red Oak 180 



ILLUSTRATIONS IN TEXT 



PAGE 



Leaf of Sunflower Crownbeard 10 



Leaf of Wood Sunflower 12 



Leaf of Wood Sunflower 13 



Leaf of Jerusalem Artichoke 16 



Flowers of Ox-Eye. Flowers of Silphium. Single 



Involucre of Silphium 18 



xvi 



