CONIFERS : PINE FAMILY. 



1. -_^YeITE Pine. " Mountain Pine." {Piniis monticola, Douglas.) 



A large and importaut timber tree, occurring in northern Montana 

 and Idaho (also in southern British Columbia, and from Washington 

 Territory to southern California) between 3,000 and 10,000 feet eleva- 

 tion, usually occurring on a poor, sandy soil. In northern Montana it 

 attains, perhaps its most valuable size, 60 to 100 feet high and over 3 

 feet in diameter. The wood is quite similar to that of the White Pine 

 of the Northeast (Pinus strobus, Linn.), and is used considerably for 

 lumber throughout its range. 



Descrq}tion.—hcfiyes in fives (with small distant teeth) often 3 to 4 inches long. 

 Cones 5 to 8 iQches long (on long stems); slender, cylindrical, yellowish-browu ; pend- 

 ulous the second year ; seeds small, ligM-colored. Bark pale, rather smooth, break- 

 ing up into squarish plates. (Distiuguished from Pinus strohus by its longer con(JS 

 and stitfer leaves.) 



2. — White Pine. (Pinus flexilis, James.) 



Next to the Bull Pine (No. 7) in its general distribution, on dry, rocky, 

 ridges^ and, although its wood is inferior to that of the former, it is 

 used for many of the same purposes j in parts of Wyoming and Mon- 

 tana furnishing most of the local' supply of lumber for domestic pur- 

 poses. Generally found growing on eastern slopes at altitudes from. 

 4,000 to 10,000 feet, from Montana (probably much farther north) to 

 New Mexico 5 (also in the Guadalupe and Limpia Mountains, western 

 Texas 5 the high ranges of Utah, Nevada, northern Arizona* and in the 

 Inyo Mountains and Mount Silliman, California.) It attains a height 

 of 50 to 75 feet, vrith a diameter of 3 feet and over. 



Description. — Leaves in fives, 1^ to 2 (exceptionally 2| to 3) inches long. Cones on 

 very short stems, oval or rather cylindrical, 3 to 5 inches long and light brown ; 

 scales spreading widely at maturity. Crown roundish ; branches drooping ; bark 

 farrowed and gray. 



3. — IIOARY-B RANCHED PiNE. [Pinus alMcauUsj Engelm.) 



A tree of little economical importance, as it rarely attains a useful 

 size. It has a limited range in the Eocky Mountain region, occurring 

 only on high ridges in northern Montana (but on the Pacific coast ex- 

 tends from southern California to British Columbia). It grows in dry, 

 gravelly soil, reaching up to the extreme line of timber growth, where 

 it becomes a shrub 5 sometimes 40 feet in height and 1 to 1^ feet in 

 diameter, though generally smaller where it occurs .in greatest abun- 

 dance. Wood light and soft. 



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