ECONOMIC WOODS OF THE UNITED STATES 



129 



TABLE V 



Important Families and Genera of Dicotyledons in the 



United States 



Aceraceoe 



Acer (maple) 

 Aquifoliacece 



Ilex (holly) 

 Betulacece 



Alnus (alder) 



Betula (birch) 

 Bignoniacece 



Catalpa (catalpa) 

 Cornacece 



Cornus (dogwood) 



Nyssa (tupelo) 

 Ebenacece 



Diospyros (persimmon; 

 Fagacece 



Castanea (chestnut) 



Castanopsis (chinquapin) 



Fagus (beech) 



Quercus (oak) 

 Hamamelidacece 



Liquidamabar (red gum) 

 Hippo castanacecB 



iEsculus (buckeye) 

 J uglandacecB 



Hicoria (hickory) 



Juglans (walnut) 

 Lauracece 



Sassafras (sassafras) 



Leguminosce 



Gleditsia (honey locust) 



Gymnocladus (Ky. coffee-tree) 



Robinia (black locust) 



Prosopis (mesquite) 

 Magnoliacece 



Liriodendron (tulip-tree) 



Magnolia (magnolia; cucumber) 

 Meliacece 



Swietenia (mahogany) 

 Moraceoe 



Morus (mulberry) 



Toxylon (Osage orange) 

 Oleaceaz 



Fraxinus (ash) 

 Platanacece 



Platanus (sycamore) 

 Rosacea? 



Prunus (black cherry) 

 Salicacece 



Populus (poplar; cottonwood) 



Salix (willow) 

 Tiliaceos 



Tilia (basswood) 

 Ulmacece 



Celtis (hackberry) 



Ulmus (elm) 



TABLE VI 

 Numerical Conspectus of the Trees of the United States 



