ECONOMIC WOODS OF THE UNITED STATES 



129 



TABLE V 



Important Families and Genera of Dicotyledons in the 

 United States 



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) 

 Oleacece 



Fraxinus (ash) 

 Platanacem 



Platanus (sycamore) 

 Rosacece 



Prunus (black cherry) 

 Salicacem 



Populus (poplar; cottonwood) 



Salix (willow) 

 Tiliacece 



Tilia (basswood) 

 Ulmacece 



Celtis (hackberry) 



Ulmus (elm) 



TABLE VI 

 Numerical Conspectus of the Trees of the United States 



Aceracece 



Acer (maple) 

 Aquifoliacece 



Ilex (holly) 

 Betulacece 



Alnus (alder) 



Betula (birch) 

 Bignoniaceas 



Catalpa (catalpa) 

 Cornaceas 



Cornus (dogwood) 



Nyssa (tupelo) 

 Ebenacece 



Diospyros (persimmon, 

 Fagacece 



Castanea (chestnut) 



Castanopsis (chinquapin) 



Fagus (beech) 



Quercus (oak) 

 Hamamelidaceoe 



Liquidamabar (red gum) 

 HippocastanacecB 



jiEsculus (buckeye) 

 Juglandaceoe 



Hicoria (hickory) 



Juglans (walnut) 

 Lauracece 



