KEY TO SPECIES 1 



I. NON-POROUS WOODS : CONIFERS : SOFTWOODS 



A. Resin ducts, present, both vertical and horizontal. 



1. With distinct contrast in color between heart and 



sapwood. 



a. Resin ducts visible to the naked eye, numerous, 

 often well distributed. Wood with charac- 

 teristic but not always marked resinous odor. 



PINE 



ol. Little contrast between spring and summer 

 wood; wood soft to medium; moderately 

 resinous; ducts fairly conspicuous, ap- 

 pearing as straw-colored or light-brown 

 lines when block or section is cut with the 

 grain. 



WHITE PINE Firms strobus 



a2. Decided contrast between spring and summer 

 wood; latter quite dense. Wood hard, 

 strong and resinous. Color whitish to 

 reddish brown. 



YELLOW PINES Pinus palustris 

 Pinus echinato 

 Pinus taeda 



(Hard to distinguish between these three yellow pines. Longleaf 

 pine, pinus palustris, likely to have heaviest wood and 

 narrowest rings. Other two are lighter and yellower in color. 



61. Wood light, rather soft, fairly strong, not 

 highly resinous, growth rings wide and 

 uniform, color light red. 



RED PINE Pinus resinosa 



1 Adapted from Tourney, Record and the Structure of the 

 Common Woods of New York by R. P. Prichard, The New York 

 State College of Forestry at Syracuse. 



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