MAST-BEARING GROUP. 



571 



FAGUS SYLVATICA (Common Beech). 



Sub-order IV. CUPULIFER.E. Mast-bearing Group. 

 * Stamens and pistils in separate flowers (monoecious). 



6. FAGUS (Beech). Barren flowers in a globose 

 catkin ; stamens 5 15 ; fertile flowers 2 together, 

 within a 4-lobed, prickly involucre ; stigmas 3 ; nuts 3- 

 cornered, enclosed in the enlarged involucre. (Name 

 in Greek phegos, a species of Oak, in Latin fagus, a 

 Beech.) 



7. CASTANEA (Chestnut). Barren flowers in a very 

 long, spike-like catkin ; stamens 10 20 ; fertile flowers 

 3 together, within a 4-lobed, very prickly involucre ; 

 stigmas 6 ; nuts not distinctly 3-cornered, enclosed in 

 the enlarged involucre. (Name, the Latin name of the 

 tree.) 



