KEY TO GENERA AND SPECIES 113 



than \ inch thick. Stones f of an inch 

 long. Southern Me. and up the Kennebec 

 river. Crataegus Jonesae Sarg. 



170. Mature leaves smooth above, or nearly so 

 171. 



170. Mature leaves hairy or woolly, or roughened, 



above 173. 



171. Leaves longer than broad 172. 



171. Leaves about as long as broad. Western 



Fig. 212. Crataegus Pringlei. 



New England to Penn. and Lake Michigan. 

 (Fig. 212.) Crataegus Pringlei Sarg. 



172. Flower and fruit-stalks very hairy. North- 

 ern New England and N. Y. northward to 

 the St. Lawrence. Crataegus anomala Sarg. 



172. Flower and fruit-stalks nearly smooth. New 



