ECONOMIC WOODS OF THE UNITED STATES 



143 



TABLE XII 



FAMILIES WITH INDIGENOUS REPRESENTATIVES EXCLUSIVELY 

 DIFFUSE-POROUS 



Aceracese 



Aquifoliaceae 



Betulaceae 



Boraginaceae 



Burseracese 



Canellacese 



Capparidacese 



Caprifoliaceae 



Caricacese (?) 



Celastraceae 



Combretaceae 



Cornacese 



Cyrillaceae 



Ericaceae 



Euphorbiacese 



Hamamelidaceae 



Hippocastanaceae 



Koeberliniaceae 



Magnoliaceae 



Myricacese 



Myrsinaceae 



Myrtaceae 



Nyctaginacese 



Platanaceae 



Polygonaceae 



Rhamnaceae 



Rhizophoracesa 



Rosacese 



Salicaceae 



Styracese 



Symplocaceae 



Theaceae 



Theophrastaceae 



Tiliaceae 



Zygophyllaceae 



TABLE XIII 

 INDIGENOUS RING-POROUS WOODS 



Acacia 



Ailanthus (Nat.)- 



Asimina 



Avicennia 



Broussonetia (Nat.) 



Bumelia 



Castanea 



Castanopsis 



Catalpa 



Celtis 



Cercis 



Chilopsis 



Chionanthus 



Cotinus 



Dalea 



Diospyros 



Ehretia 



Eysenhardtia 



Fraxinus 



Fremontodendron 



Gleditsia 



Gymnocladus 



Hicoria (Carya) 



Leitneria 



Melia (Nat.) 



Morus 



Paulownia (Nat.) 



Parkinsonia 



Pinckneya 



Prosopis 



Ptelea 



Quercus 



Rhamnus 



Rhus 



Robinia 



Sapindus 



Sassafras 



Sophora 



Toxylon 



Ulmus 



