i8 TREES. 



no. Flowers showy. Lagerstroemia. 



Flowers in catkins, in. 

 in. Sap milky: leaves broad. Broussonetia. 



Sap not milky : leaves rather narrow. Salix. 



Compound. 



112. Pith large: fruit a small berry. Sambucus. 

 Pith moderate. 113. 



113. Leaflets at most finely toothed. 114. 



Leaflets often coarsely toothed or lobed. Acer (Negundo). 



114. Leaf-scars encircling the buds. Pheltodendron. 

 Leaf-scars not encircling the buds. Fraxinus. 



