314 PINUS, OR 



It is plentiful in different parts of Mexico. Hartweg found 

 it on the mountains of Mexico, near Ajusco, forming a tree 

 forty feet high. It is also found on the Mountain of Orizaba, 

 at an elevation of 11,000 feet, growing from forty to sixty feet 

 high. Timber resinous, and considered very good, 



A hardy kind, with a spreading head. 



No. 80. Pinus monticola, Douglas, the Mountain Pine. 

 Syn. Pinus Strobus monticola, Nuttall. 



Leaves in fives, short, smooth, and blunt-pointed, from three 

 to four inches long, rather three-sided, slender, deep glaucous- 

 green, and with a silvery appearance when young. Sheaths 

 short and imbricated. Cones long, slender, cylindrical, seven 

 inches long, and one inch and three-quarters wide, tapering to 

 rather a blunt point, smooth, and full of resin, generally in 

 whorls, and on short foot-stalks. Branches rather stout, short, 

 and densely clothed with foliage. Scales spoon-shaped, pointed, 

 three-quarters of an inch broad at the widest part of the cone, 

 and not closely pressed together, the smaller ones at the base 

 of the cone being much narrower, reflexed, pointed, and of a 

 dark, yellowish gray. Seeds small, with rather narrow, hatchet- 

 shaped wings, one inch and a quarter long. 



A tall tree, growing 100 feet or more high, and from one and 

 a half to two feet in diameter, with very much the appearance 

 of the Weymouth Pine, but with a more dense head, and 

 shorter and more glaucous leaves. 



It is found abundantly in Northern California, on Trinity 

 Mountain, at an elevation of 7000 feet, growing on granite rock 

 on a very poor, scanty soil, and on the higher mountains at the 

 Grand Rapids of the Columbia, and on the rocky banks of 

 Spoken River. Timber white, fine-grained, and tough. 



There is a variety with red-coloured cones, found on the 

 banks of Spoken River. 



It is quite hardy. 



