A tree, often 100 or occasionally 150 high, with a trunk frequently 4-5 or rarely 

 7-8 in diameter, slender spreading slightly pendulous branches clothing young stems 

 to the ground and in old age forming a narrow open often unsymmetrical pyramidal head, 

 and stout tough branchlets clothed at first with rusty pubescence, dark orange-brown and 

 puberulous in their first and dark red-purple and glabrous in their second season. Bark 

 of young stems and branches thin, smooth, light gray, becoming on old trees f'-l|' thick 

 and divided into small nearly square plates by deep longitudinal and cross fissures, and 

 covered by small closely appressed purple scales. Wood light, soft, not strong, close, 

 straight-grained, light brown or red; sometimes manufactured into lumber, used in con- 

 struction and the interior finish of buildings. 



Distribution. Scattered through mountain forests from the basin of the Columbia 

 River in British Columbia to Vancouver Island ; on the mountains of northern Washing- 

 ton to the western slopes of the Rocky Mountains of northern Montana; on the coast 

 ranges of Washington and Oregon; and on the Cascade and Sierra Nevada ranges south- 

 ward to the Kern River valley, California; most abundant and of its greatest value in 

 northern Idaho on the bottom-lands of streams tributary to Lake Pend Oreille; reach- 

 ing the sea-level on the southern shores of the Straits of Fuca and elevations of 10,000 on 

 the California Sierras. 



Often planted as an ornamental tree in Europe, and occasionally in the eastern United 

 States where it grows more vigorously than any other Pine-tree of western America. 



3. Pinus Lambertiana Dougl. Sugar Pine. 



Leaves stout, rigid, 3j'-4' long, marked on the two faces by 2-6 rows of stomata; de- 

 ciduous during their second and third years. Flowers: male light yellow; female pale 

 green.. Fruit fully grown in August and opening in October, ll'-18' or rarely 21' long; 

 seeds I'-f ' long, dark chestnut-brown or nearly black, and half the length of their firm 

 dark brown obtuse wings broadest below the middle and \' wide. 



A tree, in early life with remote regular whorls of slender branches often clothing the 

 stem tc the ground and forming an open narrow pyramid; at maturity 200-220 high, 



with a trunk 6-8 or occasionally 12 in diameter, a flat-topped crown frequently 60 or 

 70 across of comparatively slender branches sweeping outward and downward in grace- 

 ful curves, and stout branchlets coated at first with pale or rufous pubescence, dark 

 orange-brown during their first winter, becoming dark purple-brown. Bark on young 

 stems and branches thin, smooth, dark green, becoming on old trunks 2'-3' thick and deeply 

 and irregularly divided into long thick plate-like ridges covered with large loose rich 

 purple-brown or cinnamon-red scales. Wood light, soft, straight-grained, light red-brown; 



