210 



ULMACE^:. 



[CLASS 



The ovary is 2-celled, but one cell is suppressed as the 

 fruit matures. 



The timber of old Pollard Elms is valuable for orna- 

 mental cabinet-work, on account of the knots in the 

 wood, due to numerous arrested adventitious buds. The 

 wood of English Elm is suited for works which are 

 constantly wet. 



58. Natural Order Corylaceae. The Hazel Family. 



DISTRIBUTION. Principally confined to the north 

 temperate zone, and the mountain ranges of intertropical 

 countries of both hemispheres, Africa excepted. British 

 genera 4, species 4. 



Trees. Flowers monoecious. Ovary inferior, 2- or more-celled. 

 Fruit i -celled, i -seeded. 



Type Common Hazel (Corylus Avellana). 



A low deciduous tree, with monoecious flowers (the 

 male in catkins) appearing before the alternate simple 

 stipulate leaves. Fruit a nut. 



