144. 



KEY TO GENERA AND SPECIES 95 



flattened, with a broad thin wing surround- 

 ing the single seed, the wing notched at the 

 apex, and the notch usually closed above. 

 Mature fruit hairy-fringed along the margin 

 145. 



Fig. 179. Cork Elm. 



144. Mature fruit not hairy-fringed along the mar- 



gin 146. 



145. Mature fruit less than \ inch long, surfaces 



without hairs. Side veins of the leaf usually 



