304 THE CULTIVATED EVERGREENS 



high or sometimes shrubby, with wide-spreading branches; bark fissured into 

 thin brown to creamy-white scales; branchlets glabrous or puberulous with 

 scattered, minute, short hairs, brown to orange, tough and pliable: leaves 

 rigid, entire, lH~23^ inches long, dark green, with stomatic lines on the back, 

 persistent for five to eight years: cone subsessile, ovoid or globose-ovoid, 

 2-3 inches long, dull purple, finally brown; scales much thickened, often with 

 stout pointed umbo; seeds H~H inch long. High mountains of British 

 Columbia to California and Wyoming.- — Introduced by Jeffrey to Great 

 Britain in 1852. Probably hardy as far north as Canada, but difficult in 

 cultivation; it will perhaps do best on rocky slopes of northern exposure. 



80. Pinus flexilis. 



Group 2. Flexiles. 

 Cone dehiscent; seed wingless or nearly so. 



4. P. flexilis, James. Limber P. Fig. 80. Tree to 50, occasionally to 80 

 feet tall, with stout horizontal branches forming a narrow open pyramid, in 

 old age with low, broad, round-topped head; bark dark brown or nearly black 

 and deeply fissured on old trunks, on young stems and on the branches thin 

 and smooth, gray to silvery- white; branchlets glabrous or minutely brown- 

 tomentulose; winter-buds broadly ovoid, slender-pointed: leaves rigid, acute, 

 dark green, 1^-3 inches long, with stomata on the back: cones short-stalked, 

 ovoid to cylindric-ovoid, light brown, 3-6, rarely 10 inches long; scales 

 rounded at the apex, tipped with an obtuse dark umbo, the lower ones elon- 

 gated and reflexed; seeds dark brown, mottled with black, 3^-3^ inch long, 

 with narrow wing. Alberta to California, west to Montana and western 

 Texas. — Introduced in 1861 to the eastern States and to Europe by Dr. Parry. 



