PINACE^ - 5 



1. P. Banksiana, Lamb. Jack Pine. 



Leaves in 2's, stout, about 1 in. long, divergent along the branches; cones 

 usually curved, the scales blunt or ending with a minute prickle; a low tree. 

 Sandy soil, E. and N. Man., N. Sask., and Alta. 



2. P. strdbus, L. White Pine. 



Leaves in .5's, long and slender, the fascicles clustered in large tassels at the 

 ends of the branches; cones 3-6 in. long, cylindrical, nodding, often slightly 

 curved. A lofty tree with white wood, the most valuable 

 timber tree of all the pines, but now scarce. .. S. E. Man. 



3. P. sylvestris, L. Scotch Pine. 

 Leaves in 2's about 2 in. long 

 along the branch, but more 

 clustered at the end; cones 

 1 J-3 in. long, the scales thick 

 and rigid with a tubercle on 

 the centre; bark gray. A' 

 small tree, introduced, but 

 thoroughly hardy in the 

 prairie region, being exten- 

 sively used for decorative pur- 

 poses and for wind-breaks. 



fascicles given off all 



Fig. 6. — Cone 

 of Pinus 

 strobus. 



Fig. 7. — Pinus sylvestris. 



4. P. resindsa. Ait. Red or 

 NoBWAT Pine. 

 Leavesin2's; cones erect, 

 about 2 in. long, conical, the 

 scales somewhat thickened, but smooth; bark rather smooth, reddish. A 

 iall, graceful tree with somewhat hardwood ; valuable as timberv S. E. Man. 



5. P. albicaulis, Engelm. 



Leaves in 5's, l|-2- 

 thickened at the ends and often beaked but never awned, not spreading at 

 maturity. A low, much branched tree with rough gray bark. Rocky Mts. 



White-bark Pine. 

 in. long ; cones oval, sessile, dark purple, the scales 



6. P. Murrayana, Balfour. Lodge-pole Pine, Black Pine. 



Leaves in 2's, about 2 in. long, somewhat rigid ; cones small, appressed, 

 often persistent, the scales armed with prickles. A rather tall and often 

 very slender tree usually growing in thick groves ; the source from which 

 the western Indians secured poles for their lodges. Rocky Mts. and east to 

 Meridian 114° and a small area in the Cypress Hills. 



2. LARIX. Larch. 



Leaves soft, many in a fascicle, and deciduous; cones lateral, 

 the fertile red while in flower. 



