State Board of. Forestry. 97 



PINACE^. The Pine Family. 



Trees with a resinous juice; mostly evergreen; leaves linear or 

 scale-like, clustered or alternate; flowers naked, appearing in early 

 spring; fruit a cone or sometimes berry-like. A family of trees of 

 great economic importance and widely distributed, although in our 

 area the trees are usually small andjfew in number. 



Leaves all linear. 

 Leaves in bundles or fascicles. 



Leaves in bundles of 2-5, with a sheathing base 1 Pinus. 



Leaves in bundles of more than 5, without a sheath- 

 ing base 2 Larix. 



Leaves apparently 2-ranked. 



Leaves bluish-white beneath 3 Tsuga. 



Leaves green on both sides, deciduous 4 Taxodium. 



Leaves scale-like, or some of them short and awl-like. 



Fruit a small cone of 8-12 imbricated scales 5 Thuja. 



Fruit berry-like 6 Juniperus. 



1. PINUS. The Pines. 



Evergreen trees with needle-shaped leaves in bundles of 2-5 with 

 a sheath at the base; flowers appearing in the spring, the stamin- 

 ate clustered at the base of the season's shoots, the pistillate on 

 the side or near the end of the shoots; fruit a woody cone which 

 matures at the end of the second season, or more rarely at the end 

 of the third season; scales of the cone- variously thickened; seeds 

 in pairs at the base of the scales. Some trees of this genus are 

 tapped for their resinous juice from which turpentine and rosin are 

 obtained. Repeated tappings of the trees soon kill them and the 

 supply of trees is fast decreasing. The price of turpentine and 

 rosin has advanced more than one hundred per cent, during the 

 past twenty years. 



Leaves 5 in a bundle, 7-10 cm. (3-5 inches) long 1 P. Strobus. 



Leaves 2-3 in a bundle. 



Scales of cones unarmed, leaves about 2.5 cm. (1 inch) 



long 2 P. Banksiana. 



Scales of cones tipped with a short spine, leaves about 



5 cm. (2 inches) long 3 P. virginiana. 



1. Pinus Strobus Linnaeus. White Pine. Plate 7. Bark on 

 old trees thick, dark reddish-brown, furrowed, on young trees 

 greenish, smooth or nearly so; young twigs scurvy-pubescent, soon 

 smooth and brown; leaves normally 5 in a bundle, sometimes more, 

 7-10 cm. (3-5 inches) long, 3-sided, soft bluish-green, sharp pointed; 



