Black Thorn, Bullace Plum, Sloe 



Prunus instititia L. IPiunus spinosa, var. instititia Gray] 



1. A twig showing flowers and immature 



leaves x % 



2. nowor, lateral sectional view x 2^2 



3. A branch showing mature leaves and 



fruit X y^ 



4. Fruit, lateral sectional view 

 ."). Stone, lateral view x 2 

 <;. Winter twig ' i^ 



X 2 



