EXOGENOUS SER1ES-NEEDLELEAF WOODS, 143 



White Pine. Pinus monticola Dougl. 



Nomenclature. (Sudworth.) 



White Pine (Cal., Nev., Little Sugar Pine, Soft Pine 



Ore -)- (Cal.). 

 Mountain Pine, Finger Cone Western White Pine. 



Pine (Cal.). Mountain Weymouth Pine. 

 Silver Pine. 



Locality. 



Montana, Idaho, Pacific States, and British Columbia. 

 Features of Tree. 



Eighty to one hundred feet in height. Two to three feet in 

 diameter, sometimes larger. Foliage resembles, but is denser 

 than, white pine. Long smooth cones. 



Color, Appearance, or Grain of Wood. 



Heartwood light brown or red, sapwood nearly white. Straight- 

 grained, compact, suggests white pine (Pinus strobus]. 

 Structural Qualities of Wood. 



Light, soft, not strong. 



Representative Uses of Wood. 

 Lumber. 



Weight of Seasoned Wood in Pounds per Cubic Foot. 



24. 

 Modulus of Elasticity. 



1,350,000. 

 Modulus of Rupture. 



8600. 

 Remarks. 



Found at elevations of seven thousand to ten thousand feet. 

 Common and locally used in northern Idaho. 



The Lodgepole Pine (Pinus murrayand) also called Tamarack, Tama- 

 rack Pine, Murray Pine, .as well as Prickly, Black and White Spruce, is 

 distributed from Alaska to California and New Mexico. Trees are often 

 at altitudes of 6,000 to 11,000 feet. The remarkably tall, slender trunks 

 lend themselves to ties, posts and poles. The light, straight-grained 

 woods are hard to season, but easy to work. Trees are sensitive to fires 

 which, however, do not normally kill seeds. The species re-establishes 

 itself repeatedly after fires. Also see Erickson, Forestry and Irrigation, p. 503, 

 I94- 



The Spruce Pine (Pinus glabra) is the least common of the Jower 

 Southern States pines. It seldom forms pure forests and is of relatively 

 small commercial importance. The wood resembles that from the Lob- 

 lolly Pine. The name Spruce Pine is popularly applied to trees of ten 

 other American species (Sudworth) two of which are not pines. 



