MAST-BEARING GROUP. 



573 



shaped scaly involucre ; stigmas 3 ; fruit an acorn. 

 (Name, the Latin name of the tree.) 



CORYLUS AVELLANA (Common Hazel). 



9. CORYLUS (Hazel). barren flowers in a long, 

 drooping, cylindrical catkin; scales 3-cleft ; stamens 8 ; 

 fertile flowers several, enclosed in a bud-like involucre ; 

 stigmas 2 ; nut enclosed in the enlarged jagged 

 involucre. (Name, the Latin name of the tree.) 



10. CARPINUS (Hornbeam). Barren flowers in a long, 

 cylindrical catkin ; scales roundish ; fertile flowers in a 

 loose catkin ; scales large and leaf-like, 3-lobed ; stigmas 



