CHRISTMAS TREES 327 



having its needles in bundles of three from Pinus 



FIG. 42. Female Cone of the Douglas Fir of North- West America 

 (Oregon and Vancouver), Pseudotsuga Douglasii. Of the natural 

 size. (From Veitch.) 



muricata, which has the more usual arrangement of a 

 pair of needles to each bundle. The Douglas fir is also 



