. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. 12 The Pines a conic head, but in old age it is more rounded in outline. The bark of old trees is to 5 cm. thick, deeply fissured into broad ridges and square, dark brown to nearly black scaly plates; on younger stems it is simply scaly and lighter in color. The twigs are very tough and flexible, light orange-colored, softly hairy, soon becoming smooth and darker, sometimes purple and covered by loose, dryish brown sc
. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. 12 The Pines a conic head, but in old age it is more rounded in outline. The bark of old trees is to 5 cm. thick, deeply fissured into broad ridges and square, dark brown to nearly black scaly plates; on younger stems it is simply scaly and lighter in color. The twigs are very tough and flexible, light orange-colored, softly hairy, soon becoming smooth and darker, sometimes purple and covered by loose, dryish brown scales; the termi- nal buds are about 12 mm. long, twice the length of the lateral ones. The leaves are in fascicles of 5, without permanent sheaths, stout and stiff, about 5 cm., rarely 9 cm. long, and entire, or in a southern form, slightly toothed near the apex, marked on the upper faces with i to 4 rows of stomata and contain 2 â Rocky Mountain White Pine. resin-ducts and a single fibrovascular bundle; they form tufts at the ends of the twigs and pereist for about six years. The flowers appear late in June, the staminate in clusters at the end of the twigs; they are oval, about 12 mm. long, their anthers reddish. The pistillate flowers are in nearly terminal clusters of 2 or 3, nearly sessile, about 12 mm. long, bright reddish purple and subtended by persistent, dryish brown bracts. The cones, growing rapidly the second summer, have fully matured by September, when they are horizontal or shghtly declined, stout-stalked, oval or nearly cyhndric, 7-5 to 25 cm. long, about 4 cm. thick, hght brown, shedding the seeds and usually falHng o5 before winter; their scales are thin, usually broad and rounded with a thickened darker knob, scarcely reflexed at the apex, the basal ones sterile, narrower and much reflexed, the unexposed portion dull reddish brown. Seeds oval, compressed, 8 to 'i 2 mm. long, dark reddish brown and mottled, the margin narrow, the wing thin, dull, about 12 mm
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