viii List of Plates 



FACING PAGB 



Hairy St. John's Wort . . ^ . . . .140 



Wild Mignonette 146 



Wild Clematis 154 



Pepper-Mint 160 



White Campion . . . . ' . . .168 



Cornflower 176 



Golden Rod 184 



Cross-Leaved Heath 192 



