INTRODUCTION. 



xxxix 



Apricot, all the varieties of Plum, Cherry^ and 

 Laurel. Of these the last alone bears poisonous 

 fruit. The trees of this group which are natural 

 to Britain, or have been introduced, will be de- 

 scribed as belonging to the genus Prunus, though 

 classed by some botanists partly under Prunus 

 and partly under Cerasus. 



LEAF AND FRUIT OF THE WILD CHERRY. 



