68 KEY TO GENERA AND SPECIES 



no. Leaflets usually somewhat downy beneath. 

 Fruit husk more than of an inch thick. 

 Bark of medium sized trunks forming long 



Fig. 118. Big Shell-bark Hickory. 



loose plates. Nut i| to 2 inches across, 

 with a thick shell. Kernel of seed sweet. 

 Western N. Y. southwestward. (Fig. 118.) 

 Big Shell-bark, King Nut, Carya ladniosa 

 (Michx. f.) Loud. 



BIRCH. Leaves simple, alternate. Fruit clusters 

 cone-like. Nuts small, winged. 



