. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 140 BUR OAK Quercus macrocarpa, Michaux FORM-Umially attain, height of about 70 80 feet but may reach a maximum height of 170 feet with a diameter of 6-7 feet. It attain. It. greatest height in minoi. and !»<"»»»• "^T broad .Dreading branche. Mrhlch form a broad round-topped crown. In the fore«t «»« ^rownJ* UBuaUy contracted and cover, only the upper part of the trunk. It i. a giant among Ita a8«)Cl- ates. One of the largest Bur Oak. In Pennsylvania is shown in Pig. 61. BARK—Intermediate between flaky
. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 140 BUR OAK Quercus macrocarpa, Michaux FORM-Umially attain, height of about 70 80 feet but may reach a maximum height of 170 feet with a diameter of 6-7 feet. It attain. It. greatest height in minoi. and !»<"»»»• "^T broad .Dreading branche. Mrhlch form a broad round-topped crown. In the fore«t «»« ^rownJ* UBuaUy contracted and cover, only the upper part of the trunk. It i. a giant among Ita a8«)Cl- ates. One of the largest Bur Oak. In Pennsylvania is shown in Pig. 61. BARK—Intermediate between flaky bark of White Oak and very roughly ridged bark of Chestnut Oak. TWI08—Stout, covered with pale, raised and inconspicuou. lenUcels, yellowish-brown, at first hairy, later snaooth, with corky wings often IJ inches wide. BUDS—Alternate, broadly-ovate, about i of an inch long, acute or obtuw. reddlrti-brown, slightly pube«jent. Lateral buds are closely appresMd. LEAVES—Alternate, simple. 6-12 inche. long. 3-6 Inches wide, obovate or oblong; 5-7 lobed; sinuses round-based; terminal lobe largest; smooth, shiny, and dark green above; paler and finely hairy beneath. LEAF-SCABS—See "; under White Oak. page 188. FL0WEB8—Mature about May. Stamlnate flowers borne in slender ament 4-6 inches long. Pistillate sessile or short-stalked, with bright red stigmas and hairy scales. FRUIT—An acorn, maturing during first season; sessile or stalked, usually solitary. Nut ovate. 4/6-2 inches long, covered with down. Cup deep, embracing from i to entire nut, light brov»Ti, downy on Inner side, covered with large imbricated scales forming a distinct fringe near the margin. WOOD—Ring-porous; with conspicuous medullary rays; heavy, hard, strong, cloae-grained, very durable, brownish with light thin sapwood. Weighs 46 lbs. per cubic foot. U«d for the same purposes as White Oak, from which it is not distinguished on the market. DISTDraUISEINO CHARACTERISTICS
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectforests, bookyear1901
