. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 0 PLATE XXI. BLACK SPRUCE 1. Branch with pistillate fl(»w*rs, x J. 2. Branch with stamina to flowers, x J. 3. Branch with needles and rones, x J. 4. A cone-scale with two winged seeds, x j. 5. A winged seed, natural size. Terniinal^po^r'tfon'of a twig with buds and witliout needles, enlarged. A seedling, natural size. 6. 7. 8. 87 BLACK SPRUCE Picea mariana, (Miller) BSP FOEl^-A nwill tree usually attaining a height of 20-30 ft. with a diameter of 1 ft.^t mav reach a height of 100 ft. with a diameter of 3 ft. Trunk
. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 0 PLATE XXI. BLACK SPRUCE 1. Branch with pistillate fl(»w*rs, x J. 2. Branch with stamina to flowers, x J. 3. Branch with needles and rones, x J. 4. A cone-scale with two winged seeds, x j. 5. A winged seed, natural size. Terniinal^po^r'tfon'of a twig with buds and witliout needles, enlarged. A seedling, natural size. 6. 7. 8. 87 BLACK SPRUCE Picea mariana, (Miller) BSP FOEl^-A nwill tree usually attaining a height of 20-30 ft. with a diameter of 1 ft.^t mav reach a height of 100 ft. with a diameter of 3 ft. Trunk straight, continuous, very taper- S faring S^e^lar. rather short, horizontal branches, often with ascending tips which give the tree a very narrow. Irregular, conic form. BABK—Up to J of an inch in thickness and roughened by irregular, thin, dose, grayish-brown scales. See V\g. 72. TWIGfl—Rough, stoat, brown to yellowish-brown, covered with pale to black hairs. BTOS-Ovold, sharp-pointed, ii of an inch long, covered with overlapping, sharp-pointed, reddish-brown scales. LEAVES-About i-J of an inch long, 4-slded, bluish-green, rounded at ''f^'^^^^^^ ^ slightly curved, without real leaf-bases, but resting on decurrent projections of bark known as sterigmata. LEAF-8CAKS—«»ee "Leaf-Scars" under Red Spruce. FLOWEKS-Appear about May. Staminate and pistillate flowers *>f,; with resin passages present; light, soft, not strong I«le yellowish^ w^talolor. Weigh. 83 lbs. per cubic fdot. Used in the manufacture of paper pulp and occasionally in lumber. DISTINGUISHING CHAEACTEKISTIOS-See "Distinguishing Characteristics" under Red Spruce, page 86. RANGE-It is a transcontinental tree extending from Labrador to Alaska and south to Pennsylvania and Wisconsin. Wyoming counties. HABITAT-^ BU* ^ ^w. " ^ ^nrnose planting since other species of Spruce far surpass it for this Please note that these images are extracted from scanned page
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