ECONOMIC WOODS OF THE UNITED STATES 



141 



TABLE XI 



Occurrence of Tyloses and Gum Deposits in Vessels of Indigenous 

 Woods 



Acacia 



Acer 



^Esculus 



Ailanthus (Nat.). . . 



Alnus 



Amelanchier 



Amyris 



Anona 



Arbutus 



Arctostaphylos 



Asimina 



Avicennia 



Betula 



Broussonetia (Nat.) 



Bumelia 



Bursera 



Carpinus 



Castanea 



Castanopsis 



Catalpa 



Celtis 



Cercidium 



Cercocarpus 



Chilopsis 



Cladrastis 



Cornus 



€otinus 



Crataegus 



Diospyros 



Eucalyptus (Int.). . 



Fagus 



Ficus 



Fraxinus 



Fremontodendron. . 



Gleditsia 



Guaiacum 



Gymnocladus 



Hamamelis 



Hicoria (Carya) 



Ilex 



Juglans 



Kalmia 



Tyloses 



few 

 absent 

 few- 

 absent 



common 

 absent 



absent 



abundant 



common 



abundant 



common 



absent 



abundant 

 absent 



abundant 

 absent 



abundant 

 abun-few 

 absent 



abundant 

 absent 

 abundant 

 absent 



common 

 occasional 



occasional 

 common 



common 

 common 



rare 

 common 



Leitneria 



Liquidambar 



Liriodendron 



Magnolia 



Melia (Nat.) 



Mohrodendron. . 



Morus 



Nyssa 



Olneya 



Ostrya 



Oxydendrum 



Parkinsonia 



Paulownia (Nat.) 



Persea 



Planera 



Platanus 



Populus 



Prosopis 



Prunus 



Ptelea 



Pyrus 



Quercus (white) . , 



(red).... 



(live) 



Rhamnus 



Rhizophora 



Rhododendron . . 



Rhus 



Robinia 



Salix 



Sambucus 



Sapindus 



Sassafras 



Swietenia 



Symplocos 



Tilia 



Toxylon 



Ulmus 



Umbellularia 



Vaccinium 



Viburnum 



Xanthoxylum 



Tyloses 



absent 

 common 



few 



absent 



abundant 



absent 



common 



absent 



abundant 

 common 



absent 

 few 



common 

 absent 



common 

 absent 

 abun-few 

 few-abun. 



absent 



absent 

 abundant 

 abundant 

 common 



absent 



common 



absent 



abundant 

 few-abun. 

 absent 



common 

 occasional 



common 



common 

 occasional 



