ii 4 KEY TO GENERA AND SPECIES 



England southward and westward. Cratae- 

 gus Holmesiana Ashe. 



Fig. 213. Crataegus Fig. 214. Crataegus 



Arnoldiana. submollis. 



173. Fruit pear-shaped or somewhat elongated, 

 ripening in September and October 174. 



173. Fruit globular, ripening in August. Local in 



southern New England. (Fig. 213.) Cratae- 

 gus Arnoldiana Sarg. 



174. Leaves thickish or somewhat leathery. North- 



western Vt. Crataegus Champlainensis Sarg. 

 174. Leaves thin. Southern Me. to central N. Y. 

 and northward to the St. Lawrence. (Fig. 

 214.) Crataegus submollis Sarg. 



