The Pines 



DD. Leaf clusters along sides of twig; cone scales 

 with spiny beaks. 

 E. Spines of cone scales minute, incurved. 



(P. Balfouriana) foxtail pine 

 EE. Spines of cone scales, long, slender. 



{P. aristata) bristle-cone pine 

 AA. Leaves i to 4 in a bundle, i to 2 inches long; cones 

 globose; seeds nut-like. 

 B. Bundles 4-leaved, pale, glaucous green. 



{P. quadrifolia) nut pine 

 BB. Bundles 2 to 3-leaved, dark green. 



C. Leaves slender. {P. cembroides) nut pine 



CC. Leaves stout. {P. edulis) nut pine 



BBB. Bundles i-leaved, pale, glaucous green. 



{P. monophylla) nut pine 



White Pine {Pinus Strobus, Linn.) — A stately tree, 100 to 

 120 feet high, conical, with spreading, horizontal branches in 

 whorls of five. Bark grey, furrowed, thick, with broad, scaly 

 ridges. Wood light, soft, close grained, resinous, easily worked. 

 Buds, a strong, terminal, set round by five lateral ones in 

 whorl ; i to i inch long, pointed, with thin, pale-brown scales. 

 Leaves evergreen, needle-like, in fives, sheathed at base of bun- 

 dle, 3 to 5 inches long, slender, 3-sided, flexible, blue-green. 

 Flowers in June, monoecious; staminate, clustered at base of sea- 

 son's shoots, § to I inch long, catkin-like, yellowish ; pistillate, 

 subterminal, single or in twos, stemmed, elliptical, pink or pur- 

 plish, and scaly, 2 ovules on each scale. Fruit biennial, 5 to 10 

 inches long, slender, stalked, with thin, unarmed scales ; seeds 

 winged. Preferred habitat, good soil, moist woodlands, or up- 

 lands. Distribution, Newfoundland to Manitoba; south through 

 Iowa, Illinois and Ohio to northern Georgia ; southern Canada 

 and Eastern States, along AUeghanies to eastern Kentucky and 

 Tennessee. Uses : One of the best ornamental conifers and 

 formerly the chief lumber tree in this country. 



Pines bear their evergreen leaves in sheathed bundles set on 

 little projecting shelves along the twigs. The sheaths are shed 

 during the spring in all the white pines, and the number of 

 leaves in a bundle is always five. Certain pitch pines have 

 leaves in fives, but the sheaths will be found at the bases of the 

 bundles throughout the season. These 5-Ieaved pitch pines are 

 all Western trees. In Eastern woods a 5-leaved pine is a white 

 pine, P. Strobus, whether it is a flourishing little sapling, with 



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