HOP HORNBEAM. IRON-WOOD. 



Ostrija Yrrgiiiiana (Mill.) Koch. 



Fig. 131. Eranclilct witli niatiire le.lvcs and fruit, i : imolucral sacs opened, to show nutlets, and 



detached nutlets, 2 ; branchlcts in winter bearing young staniinate aments and leaf-buds. 3. 



132. Trunk of tree, in I^ewis Co.. N. Y. 



133. Wood structure magnified 15 diameters 



