xii CONTENTS 



PAGE 



Violet Wood Sorrel 259 



Hairy Beard-tongue 259 



Painted Cup 260 



Queen of the Prairie 261 



Common Pasture Rose 262 



Swamp Rose 262 



Early Rose 262 



Sweet-brier; Eglantine 263 



Wild Bergamot 263 



Purple Cone-flower 264 



Cross-leaved Milkwort 264 



Corn Cockle 265 



Swamp Rose Mallow 265 



Purple Gerardia 266 



IV 

 BLUE AND PURPLE 



LlVERLEAF 270 



sharp-lobed llverleaf 270 



Bird-foot Violet 272 



Robin's Plantain 274 



Wild Lupine 274 



Bluets 276 



Gill-over-the-Ground 276 



Larger Blue Flag 278 



Slender Blue Flag 278 



Cow Vetch 280 



American Vetch 280 



Bittersweet; Nightshade 282 



Self-heal 284 



Blue-eyed Grass 284 



Bellflower 286» 



Harebell 286 



Pale Spiked Lobelia 290 



