144 



ECONOMIC WOODS OF THE UNITED STATES 



TABLE XIV 

 Nature of Pitting in Wood Fibhes of Indigenous Woods 



Genus 



Acacia 



Acer 



iEsculus 



Ailanthus (Nat.) 



Alnus 



Amelanchier 



Amyris 



Andromeda 



Anona 



Arbutus 



Arctostaphylos 



Asimina 



Avicennia 



Betula 



Broussonetia (Nat.)-- 



Bumclia 



Bursera 



Carpinus 



Castanea 



Castanopsis 



Catalpa 



Ceanothus 



Celtis 



Cercis 



Cercocarpus 



Chilopsis 



Chionanthus 



Chry.sophyllum 



Cladrastis 



Cornus 



Cotinus 



Crataegus 



CyriUa 



Dic)si)yros 



Eucalyptus (Int.). . . , 



Eafz;u.s 



Ficu.s 



Fraxinus 



Fromontodendron. . . 



Gleditsia 



Gordonia 



Guaiacum 



Gymnocladus 



Hamamelis 



Hicoria (Gary a) .... 

 Ilex 



Simple ^g°g'^ 



X 

 X 



X 



X- 



X- 



X 



X 



X 

 X 

 X 



X 

 X 

 X 

 X 

 X 

 X 



X- 

 X 



X 



X 

 X- 

 X 

 X 



X 



X 

 -X 



X 

 X 

 X 

 X 



X 

 X 

 X 



X 



X 



X 

 X 

 X 

 X 

 X 



X 

 X 



X 

 X 

 X 



Genua 



Juglans 



Kalmia 



Leitnoria 



Liciuidambar .... 

 Liriodendron. . . . 



Magnolia 



Melia 



Mohrodendron. . . 



Morus 



Myrica 



Nyssa 



Ocotea 



Olneya 



Cstrya 



Oxydondrum 



Parkinsonia 



Paulownia (Nat.) , 



Persea 



Planera 



Platanas 



Populus 



Prosopis 



Prunus 



Ptelea 



Pyrus 



Quercus 



Rhamnus 



Rhizophora 



Rhododendron. . . 



Rhus 



Robinia 



Salix 



Sambucus 



Sapindus 



Sassafras 



Siderox^don 



Swietenia 



Symplocos 



Tilia 



Toxylon 



Ulrnus 



Umbellularia .... 



Vaccinium 



Viburnum 



Xanthoxylum. . . . 



S-P'e cfer^ 



X 

 X 



X 

 X 



X 

 X 

 X 

 X 



X 

 X 



X 



X 

 X 



X 

 X 

 X 

 X 

 X 

 X 

 X 

 X 



X 

 X 

 X 



X 



X 

 X 



X 

 X 

 X 



X 



X 

 -X 



X 

 X 



X 



X 



X 

 X 



X 



X 

 -X 



X 

 X 



Arrows indicate transitions from the prevailing type. 



