KEY TO GENERA AND SPECIES 97 



more than 18 pairs. Western New England 

 westward and southward . (Figs . 178,179.) 

 Cork Elm, Rock Elm, Northern Cork Elm, 

 Ulmus racemosa Thomas. 



146. Mature fruit not hairy 



147. 

 146. Seed portion of the fruit 



hairy, elsewhere without | 



hairs. Central New 



England southward and 



westward. (Figs. 180, 



181.) Slippery Elm, Red Fig. 182. English Elm. 



i7i TT7 f i TV/T- u a - Leaf - b - Fruit - 

 Elm, Ulmus fulva Michx. 



Fig. 183. English Elm. 



