HOP HORNBEAM. 



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Plate 28. Ostrya virginiana. Hop Hornbeam. 



1. Flowering branch, one-half natural size. 2. Scale of staminate catkin, en- 

 enlarged. 3. Stamen, enlarged. 4. Diagram of pistillate inflorescence. 5. 

 Scale of pistillate catkin, enlarged. 6. Pistillate flower enclosed in bract and 

 bractlets, enlarged. 7. Fruiting branch, one-half natural size. 8. Longitudinal 

 section of fruiting involucre, showing nut. one-half natural size. 9. Longitudinal 

 section of nut, natural size. 



