32 FOREST-TREES OF THE UNITED STATES. 



fields. It is variable in height, sometimes rising to 70 or 100 feet high. 

 The timber is said to be valuable, though less so than that of P. australis. 



No. 363. Pinus aristata, Eng. Prickly-coned Pine. Rocky Mount- 

 ains. This species was first found in Colorado near Pike's Peak, but it 

 is now considered to be synonymous with the next. 



No. 364. Pinus Balfouriana, Jeffrey. Balfour's Pine. Rocky Mount- 

 ains. The specimen is from Southern Utah, and grows on high, bar- 

 ren, sandstone mountains: it grows about 50 to 60 feet high. The tree 

 is distinguished by its long branches, which are heavy, causing the ends 

 to hang down. The tree is compact in appearance and" of very dark-green 

 color. It is thought by some that the tree of Oregon, which has been 

 described under this name, is a different species. 



No. 365. Pinus flexilis, James. Bull Pine. Rocky Mountains. This 

 is the prevailing pine of the East Humboldt Mountains, Nevada, and 

 frequent in the Wasatch. It also grows in Colorado and on the San 

 Francisco Mountains of Arizona. In the Wasatch Mountains it is found 

 at high altitudes on limestone ledges, and has a branched and knotty 

 habit, rendering it unfit for lumber. It is called by the inhabitants 

 Bull Pine. It is a middle-sized tree, usually 30 to 50 feet high, but re- 

 corded by Fendler as 60 to 80 feet high near Santa Fe. 



No. 366. Pinus albicaulis, Eng. White-barked Pine. Rocky Mount- 

 ains. This species, although closely related to the preceding, is believed 

 to be different. It grows only at extreme altitudes. It grows on the 

 Cascade Mountains of Oregon, on alpine peaks in the Sierra Nevada 

 Mountains, and on high mountains in Idaho and Montana. The name 

 is suggested by the color of the bark of the tree, which Dr. Eugelman 

 says is as white as milk. 



No. 367. Pinus Lambertiana, Doug. Sugar Pine. Sierra Nevada 

 Mountains. Found sparsely growing on the Sierras of California, 

 through their extent, at altitudes of from 4,000 to 10,000 feet. It is often 

 150 to 220 feet high, with a diameter of 8 to 14 feet. It is highly 

 prized and eagerly sought by lumbermen for all articles of building- 

 lumber, and is fast being exhausted. It is called Sugar Pine from the 

 sweet resin which exudes from partially-burned trees. It is also called 

 Mammoth Pine and Shake Pine. It has enormous cones. 



No. 368. Pinus monticola, Dougl. Soft Pine 5 Little Sugar Pine. 

 California. Grows sparsely on the high Sierras, at altitudes of 7,000 to 

 11,000 feet. It sometimes attains a height of 150 to 200 feet, with a 

 diameter of 5 to 7 feet. It resembles the Sugar Pine, but with whitish, 

 much furrowed, bark and smaller cones. The timber is similar to that 

 of White Pine, but is seldom used, because the trees are so inaccessible. 



No. 369. Pinus strobus, L. White Pine ; Weymouth Pine. Eastern 

 United States. An old, well-known, and useful tree, extending from 

 Canada to Virginia, but plentiful in New England, New York, and 

 Pennsylvania. It is a large tree, becoming 100 to 150 feet high. It is 

 the source of much of the lumber brought from the Northern States. It 

 is not only very valuable on account of its wood, but is one of the finest 

 ornamental conifers. 



No. 370. Pinus Chihuahua, Eng. Southern Arizona and Northern 

 Mexico. 



No. 371. Abies alba, Michx. White Spruce. New England and Alle- 

 ghany Mountains. A small tree, native of the northern portion of the 

 United States and Canada, extending northward to the extreme con- 

 fines of vegetation. It grows from 20 to 30 feet high, according to soil 

 and latitude. It is frequent in cultivation, and is considered a handsome 

 tree. 



