ECONOMIC WOODS OF THE UNITED STATES 83 



a 3 Color very light. Texture very fine. Odor 

 moderately rjronounced. Ray tracheids common in 

 low rays. Yellow Cedar, Yellow or Sitka Cypress, 



Chamcecyparis nootkatensis Spach. (P). 



b 3 Color deep yellow, sometimes brownish. Texture 

 moderately fine. Odor very pronounced. Ray tra- 

 cheids rarely present. Port Orford Cedar, Lawson's 

 Cypress, Oregon Cedar, C. lawsoniana Pari. (P). 



b 2 Color_varying from light browntojjurple, never 

 yetloj KT Late wood ~diitancTf"oftencbnspicuous. 

 Odor variable, more or less pronounced, but not 

 pungent. Taste not unpleasant. 



a 3 Wood firm and compact, cutting ^smoothly across 

 the__grain. Moderate contrast between seasonal 

 growths; transition gradual. Demarcation be- 

 tween heartwood and sapwood usually^distinct. 



Red Cedar Group. 



a 4 Color pale reddish-brown or roseate, uniform; 

 rays brown. Odor pronounced. Taste spicy. 

 Resin cells fairly^numerous, zonate, mostly in 

 late wood; usually not visible with lens. Tex- 

 ture rather fine, uniform. Growth rings regu- 

 lar; late wood fairly conspicuous. Heartwood 

 often " pecky " as in Taxodium. Sp. gr. 

 .34-46, mostly between .35 and .40. Rays not 

 gummy; 1-8, mostly 3-5, cells high; ray tracheids absent. 

 Incense Cedar, Libocedrus decurrens Torr. (P). 26 



b 4 Color purpl e or deep red, soon becoming dull 

 brown upon exposure to sunlight; often streaked 

 with white ; r ays deep red or purp le. ~ OcTor an d 

 t aste charac teristic but mild; not sweetish or 

 spicy. Resin cells very numerous, deeply colored, 

 mostly zonate (Plate II, Fig. 3) in concentric 

 lines visible with lens and often without it. 

 Rays gummy, 1-20 cells high, very irregular. 

 Texture very fine and uniform. , Growth rings 

 often very irregular in width and outline, fre- 

 quently eccentric; summer wood not conspic- 

 uous, sometimes doubled or trebled. Wood 



