CONIFERS 5 



2. Pinus monticola, D. Don. White Pine. 



Leaves blue-green, glaucous, whitened by 2-6 rows of ventral and often by dorsal 

 stomata. Flowers : staminate yellow; pistillate pale purple. Fruit 12'-18' long, 



shedding its seeds late in the summer or in early autumn; seeds narrowed at the 

 ends, I' long, pale red-brown mottled with black, about one third as long as their wings. 



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 unsymmetri- 

 cal 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 |'-1^' thick and divided into small nearly square plates by 

 deep longitudinal and cross fissures 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 construction and the interior finish of buildings. 



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

 River in British Columbia to Vancouver Island, along the western slopes of the 

 Rocky Mountains to northern Montana, on the mountains of northern Idaho and 

 Washington, on the coast ranges of Washington and Oregon, and on the Cascade 

 and Sierra Nevada ranges southward to the Kern River valley, California ; most 

 abundant and of greatest value in northern Idaho on the bottom-lands of streams 

 tributary to Lake Fend Oreille; reaching 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, 3^ '-4' long, marked on the two faces by 2-6 rows of stomata; 

 deciduous during their second and third years. Flowers : staminate light 3'ellow, 

 pistillate pale green. Fruit fully grown in August and opening in October, ll'-18' 

 or rarely 21' long; seeds l|'-5' long, dark chestnut-brown or nearly black, and half 



