EVERGREEN TREES AND SHRUBS. 523 



want of it we know nothing, and have not heard of it in planted 

 grounds. 



COULTER'S OR SABINE'S PINE. P. Coulterii (P. Sabiana, P. 

 macrocarpa). This species is usually found associated with the P. 

 Benthamiana, but on lower elevations. It is a lofty tree, with 

 slender branches and very long foliage borne near the extremities 

 of the limbs. Not a pleasing tree. 



CALIFORNIA MOUNTAIN PINE. P. monticola. A species closely 

 resembling the white pine of the eastern States, and therefore of 

 little value in a collection where the latter is growing. 



AMERICAN CEMBRAN, OR CONTORTED-BRANCHED PINE. P. 

 flexilis. A tree of very slow growth, indigenous on the mountains 

 of northern Mexico and California, at elevations of from seven 

 to fourteen thousand feet above the sea. It varies in size 

 from a tree from sixty to eighty feet high near Sante Fe, to a low 

 flat-top shrub, only a few feet in height, and " so compact that a 

 man may walk upon it," where found at its greatest altitude above 

 the sea. It forms a tree of oval outline like the European cembran 

 pine, the lower branches horizontal, the upper ones ascending, and 

 both large and somewhat tortuous, but very flexible ; whence its 

 name. The foliage is said to resemble most that of our white pine, 

 but the leaves are shorter and stouter, and the branching more irreg- 

 ular. Supposed to be quite hardy. Desirable for great collections. 



FREMONT'S PINE. P. Fremontiana. A small, nut-bearing tree, 

 found in the upper elevations of the Sierra Nevada range, from 

 five to seven thousand feet above the level of the sea. It has 

 many and slender, spreading branches, which are fragrant when 

 bruised. It is a very slow grower. Whether hardy and of beauty 

 enough to give it value east of the Rocky Mountains is yet a matter 

 of experiment. Height twenty feet 



HARTWEG'S PINE. P. Hartwegii. " A handsome tree growing 

 from forty to fifty feet high, with a dense compact head of a fine 



