ECONOMIC WOODS OF THE UNITED STATES 



129 



TABLE V 



Important Families and Genera of Dicotyledons in the 

 United States 



Aceracece 



Acer (maple) 

 Aquifoliaceoe 



Ilex (holly) 

 Betulacece 



Alnus (alder) 



Betula (birch) 

 Bignoniaceoe 



Catalpa (catalpa) 

 Cornacece 



Cornus (dogwood) 



Nyssa (tupelo) 

 Ebenacece 



Diospyros (persimmon, 

 Fagaceoe 



Castanea (chestnut) 



Castanopsis (chinquapin) 



Fagus (beech) 



Quercus (oak) 

 Hamamelidacece 



Liquidamabar (red gum) 

 Hippocastanaceoe 



jEsculus (buckeye) 

 Juglandacece 



Hicoria (hickory) 



Juglans (walnut) 

 Lauraceos 



Sassafras (sassafras) 



Leguminosos 



Gleditsia (honey locust) 



Gymnocladus (Ky. coffee-tree) 



Robinia (black locust) 



Prosopis (mesquite) 

 Magnoliacem 



Liriodendron (tulip-tree) 



Magnolia (magnolia; cucumber) 

 Meliaceoe 



Swietenia (mahogany) 

 Moraceos 



Morus (mulberry) 



Toxylon (Osage orange) 

 Oleacece 



Fraxinus (ash) 

 Platanacece 



Platanus (sycamore) 

 Rosacea 



Prunus (black cherry) 

 Salicaceoe 



Populus (poplar; cottonwood) 



Salix (willow) 

 Tiliacetz 



Tilia (basswood) 

 Ulmacece 



Celtis (hackberry) 



Ulmus (elm) 



TABLE VI 



Numerical Conspectus of the Trees of the United States 



