. 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. 294 The Oaks and embracing one third to one half of nut, the scales closely imbricated, sharp- i pointed, brown and smooth or finely hairy. The wood is hard, strong and coarse-grained, reddish brown; its specific gravity is about ; it is used for the same purposes as that of the Red oak, but is not as valuable. Its comparatively rapid growth, beautiful foliage, and brilliant autumnal color- ation, which lasts longer t
. 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. 294 The Oaks and embracing one third to one half of nut, the scales closely imbricated, sharp- i pointed, brown and smooth or finely hairy. The wood is hard, strong and coarse-grained, reddish brown; its specific gravity is about ; it is used for the same purposes as that of the Red oak, but is not as valuable. Its comparatively rapid growth, beautiful foliage, and brilliant autumnal color- ation, which lasts longer than that of any of its competitors, make the Scarlet oak one of the most desirable trees for street or park. A supposed hybrid with the Bear oak, Q. ilicifolia Wangenheim, has been found in Massachusetts. II. CALIFORNIA BLACK OAK —Quercns KeUo^ Newberry Quercus californica (Torrey) Cooper. Quercus tinctoria californica Torrey A tree of the mountain ranges of California and southwestern Oregon, reach- ing its maximum development of 30 meters tall and a trunk diameter of m., at an altitude of about 1800 meters; at very high altitudes it is re- duced to a shrub. It is also known as Kellogg's oak, Mountain black oak, and Black oak. The stout branches are widely spreading, the tree becoming round topped. The bark is 4 cm. thick, furrowed, the ridges broken into irregular, oblong scaly plates, dark brown or black; on younger stems it is smooth and light brown. The twigs are hairy at first, becoming smooth, light red or brown and finally darker red-brown. The winter buds are ovoid, gradually tapering to a sharp point, 5 mm. long, brown, and somewhat hairy. The leaves are oblong or obovate in outline, to 15 cm. long, the usually 7 lobes, wedge-shaped to broadly ovate, coarsely bristle-tipped, toothed or sometimes entire, the middle pair of lobes much the largest, the sinuses oblique, wide and usually rounded at. the bottom, the base of the leaf obliquely wedge- shaped or roun
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