ECONOMIC WOODS OF THE UNITED STATES 



129 



TABLE V 



Important Families and Genera of Dicotyledons in the 

 United States 



Aceraceoe 



Acer (maple) 

 AquifoliacecB 



Ilex (holly) 

 Betulacece 



Alnus (alder) 



Betula (birch) 

 BignoniacecB 



Catalpa (catalpa) 

 Cornaceoe 



Cornus (dogwood) 



Nyssa (tupelo) 

 Ebenacece 



Diospyros (persimmon^ 

 Fagacece 



Castanea (chestnut) 



Castanopsis (chinquapin) 



Fagus (beech) 



Quercus (oak) 

 Hamamelidacece 



Liquidamabar (red gum) 

 Hippocastanacece 



^sculus (buckeye) 

 J uglandacece 



Hicoria (hickory) 



Juglans (walnut) 

 LauraceoR 



Sassafras (sassafras) 



Leguminosce 



Gleditsia (honey locust) 



Gymnocladus (Ky. coffee-tree) 



Robinia (black locust) 



Prosopis (mesquite) 

 Magnoliaceoe 



Liriodendron (tulip-tree) 



Magnolia (magnolia; cucumber) 

 Meliacece 



Swietenia (mahogany) 

 Moracem 



Morus (mulberry) 



Toxylon (Osage orange) 

 OleacecE 



Fraxinus (ash) 

 Platanacece 



Platanus (sycamore) 

 Rosacece 



Prunus (black cherry) 

 Salicacece 



Populus (poplar; cottonwood) 



Salix (willow) 

 Tiliacece 



Tilia (basswood) 

 Ulmacece 



Celtis (hackberry) 



Ulmus (elm) 



TABLE VI 

 NuMERic.vL Conspectus of the Trees of the United States 



