i io KEY TO GENERA AND SPECIES 



less than half way to the midrib, 

 with 2 or more stones 160. 



Fruit 



160. Stones 2 or 3, each with 2 prominent depres- 

 sions on the inner side. Leaves leathery, 

 shining above. Nova Scotia westward and 



Fig. 208. English 

 Hawthorn. 



Fig. 209. Crataegus 

 macracantha. 



southward. (Fig. 209.) Crataegus macra- 

 cantha Lodd. 



160. Stones without deep depressions on the inner 

 side 161. 



161. Flowers and fruits generally 3 to 7 in a clus- 

 ter. Leaf-stalks with glands. Central 

 New England to N. C. Scarlet Thorn, 

 Scarlet Haw, Red Haw, White Thorn, 

 Crataegus coccinea L. 



