The Pines 



rich in resin. Chief among these is P. palustria. It includes the 

 other Southern lumber pines and P. rigida in the Eastern States. 



" Georgia pine " is P. palustris. " North Carolina pine " is 

 P. echinata. 



The "soft pines" have soft, light wood, with little resin, 

 easy to work — the carpenter's delight. The principal ones are 

 P. Strobus, in the North and East, P. Lambert/ana, of the Pacific 

 coast, and two Rocky Mountain species, P. monticola and P. 

 flexilis. 



"Jack pines," used locally for ties and timbers, but not in 

 the regular lumber trade, are small or medium-sized trees : P. 

 rigida, P. l^irginiana and P. divaricata in the East and North ; 

 P. contorta, var. Murrayana, one in the West. 



THE SOFT PINES 



Leaf bundles in loose, deciduous sheaths. Cone scales 

 usually unarmed. Wood soft, light coloured, close grained. 



KEY TO SPECIES 



A. Leaves 5 in a bundle. 



B. Cones long stemmed; scales thin; leaves 3 to 4 

 inches long. 

 C. Leaves slender, flexible; cones 5 to 8 inches long. 

 D. Cone scales not recurved at maturity; leaves 

 bluish green. {P. Strobus) white pine 



DD. Cone scales recurved at maturity; leaves pale 

 green. {P. strobiformis) Arizona white pine 

 CC. Leaves stout, stiff. 



D. Cones 5 to 12 inches long; limbs grey. 



(P. monticola) mountain pine 

 DD. Cones 12 to 18 inches long; limbs green. 



{P. Lambertiana) svGAK pine 

 BB. Cones short stemmed; scales thick; leaves i to 2 

 inches long. 

 C. Leaf bundles scattered; cones 3 to 10 inches long, 

 opening at maturitv. 



(P. flexiiis) ROCKY mountain white pine 

 CC. Leaf bundles in crowded clusters. 



D. Leaf clusters at ends of twigs; cones not open- 

 ing; bark pale. 



(P. albicaulis) white-bark pine 

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