The Pine Family 129 



on the trees; fourth, the slow release of seeds from the cones, re- 

 sulting in an almost permanent locking up of a considerable propor- 

 tion of the seed ; and finally, the long retention of germinative 

 capacity by the seed." 



9. SCRUB PINE. Pinus contorta. Loudon. 



This is a low tree somewhat stunted and often irregularly 

 shaped or apparently twisted. 



It resembles the preceding species in many ways, particularly 

 in the size, shape and location of its cones, its production of 

 seed when very small sometimes only a few inches high 

 and the long vitality of the seed itself. 



It differs in having a much thicker bark, especially near the 

 base of the trunk, and strong, hard, coarse-grained and resinous 

 wood, as well as in its stunted growth. The resemblance, 

 however, is sufficiently strong to induce some authors to con- 

 sider them as merely different varieties of the same species. 



Its range is along the Pacific coast extending inland to the 

 western slopes of the Coast Range. Growing as it does where 

 some of the largest and most valuable timber trees of the con- 

 tinent are very abundant, this tree cannot 

 be said to have any economic value. 



10. SCOTCH PINE. Pinus silvestris. Linnaeus. 



This is the common European pine trans- 

 planted to this continent. It closely 

 resembles our red pine, except that the 

 leaves are shorter and more rigid and the 

 branches have little or no tendency to 

 droop. 



It is widely grown for ornamental pur- 



, . FIG. 7. Scotch Pine, 



poses in the eastern part of the conti- 

 nent, and also grows well on the prairie. It stands heat, 

 cold and drought without apparent injury, can be reproduced 



