KEY TO GENERA AND SPECIES 107 



MOUNTAIN ASH. Leaves compound. Fruit red, 

 fleshy, with a core like an Apple or Pear.* 



157. Fruit about | inch thick, in flat-topped 

 clusters. Leaflets smooth, lance-shaped, 



Fig. 203. Ameri- 

 can Mountain Ash. 



Fig. 204. Western 

 Mountain Ash. 



Fig. 205. Euro- 

 ' pean Moun- 

 tain Ash. 



taper-pointed. Labrador to northern New 

 England and northwestward. (Fig. 203.) 

 American Mountain Ash, Round-wood, 

 Pyrus americana (Marsh.) DC. 



* Pyrus hybrida L., with the leaves compounded (pinnately) 

 only at the base, is a local escape in Maine. 



